Why does this code throw a runtime error?
Everything is right!!

from sys import stdin
pocht_1 = ["A", "P", "O", "R"]
pocht_2 = ["B", "M", "S"]
pocht_3 = ["D", "G", "J", "K", "T", "W"]
count = 0
mesto = 1
for i in sys.stdin.split("\n")[1:]:
    if i[0] in pocht_1:
        if mesto == 3:
            count += 2
        elif mesto == 2:
            count += 1
        mesto = 1
    elif i[0] in pocht_2:
        if mesto == 1:
            count += 1
        elif mesto == 3:
            count += 1
        mesto = 2
    else:
        if mesto == 1:
            count += 2
        elif mesto == 2:
            count += 1
        mesto = 3
print(count)

n=int(input())
a=[]
for i in range(n):
    s=input()
    if(s[0]=="A" or s[0]=="P" or s[0]=="O" or s[0]=="R"):
        a.append(0)
    elif(s[0]=="B" or s[0]=="M" or s[0]=="S"):
        a.append(1)
    else:
        a.append(2)
t=0
for i in range(n):
    if(i+1<n):
        t=t+abs(a[i]-a[i+1])
print(t)

#include <iostream>
#include <set>
using namespace std;
int main() {
    int index = 0, cnt = 0, n;
    set<string> a, b, c;
    a.insert("Alice");
    a.insert("Ariel");
    a.insert("Aurora");
    a.insert("Peter");
    a.insert("Phil");
    a.insert("Olaf");
    a.insert("Phoebus");
    a.insert("Ralph");
    a.insert("Robin");
    b.insert("Bambi");
    b.insert("Belle");
    b.insert("Bolt");
    b.insert("Mulan");
    b.insert("Mowgli");
    b.insert("Mickey");
    b.insert("Silver");
    b.insert("Simba");
    b.insert("Stitch");
    c.insert("Dumbo");
    c.insert("Genie");
    c.insert("Jiminy");
    c.insert("Kuzko");
    c.insert("Kida");
    c.insert("Kenai");
    c.insert("Tarzan");
    c.insert("Tiana");
    c.insert("Winnie");
    cin >> n;
    int a1=0,b1=1,c1=2;
    for(int i = 0; i < n; i++)
    {
        string ask;
        cin >> ask;
        if(*a.find(ask) == ask)
        {
            cnt += abs(index - a1);
            index = a1;
        }
        if(*b.find(ask) == ask)
        {
            cnt += abs(index - b1);
            index = b1;
        }
        if(*c.find(ask) == ask)
        {
            cnt += abs(index - c1);
            index = c1;
        }

    }
    cout << cnt;

}

def bin_Search(arr, val):
    low = 0
    high = len(arr)-1
    while low <= high:
        mid = (low + high) // 2
        if val < arr[mid]:
            high = mid - 1
        elif val > arr[mid]:
            low = mid + 1
        else:
            return True
    else:
           return False


first = ["Alice", "Ariel", "Aurora", "Phil", "Peter", "Olaf", "Phoebus", "Ralph", "Robin"]
first.sort()
second = ["Bambi", "Belle", "Bolt", "Mulan", "Mowgli", "Mickey", "Silver", "Simba", "Stitch"]
second.sort()
third = ["Dumbo", "Genit", "Jiminy", "Kuzko", "Kida", "Kenai", "Tarzan", "Tiana", "Winnie"]
third.sort()
n = int(input())
pos = 1
steps = 0
for i in range(n):
    name = str(input())
    if bin_Search(first, name) == True:
        steps += pos - 1
        pos = 1
    elif bin_Search(second, name) == True:
        if (pos - 2) < 0:
            steps += ((pos - 2) * -1)
            pos = 2
        else:
            steps += pos - 2
            pos = 2
    else:
        if (pos - 3) < 0:
            steps += ((pos - 3) * -1)
            pos = 3
        else:
            steps += pos - 3
            pos = 3
print(steps)


In this solution i used binary search

var str: string;
i,kol,n,pol: integer;
begin
readln(n);
pol:=1;
kol:=0;
for i:=1 to n do
begin
readln(str);
if (str='Alice')or(str='Ariel')or(str='Aurora')or(str='Phil')or(str='Peter')or(str='Olaf')or(str='Phoebus')or(str='Ralph')or(str='Robin') then
begin
kol:=kol+abs(pol-1);pol:=1;
end
else
if (str='Bembe')or(str='Belle')or(str='Bolt')or(str='Mulan')or(str='Mowgli')or(str='Mickey')or(str='Silver')or(str='Simba')or(str='Stitch') then
begin
kol:=kol+abs(pol-2);pol:=2;
end
else
if (str='Dumbo')or(str='Genie')or(str='Jiminy')or(str='Kuzko')or(str='Kida')or(str='Kenai')or(str='Tarzan')or(str='Tiana')or(str='Winnie') then
begin
kol:=kol+abs(pol-3);pol:=3;
end;
end;
write(kol);
end.

Edited by author 17.11.2016 23:36

Edited by author 17.11.2016 23:36

#include <iostream>
int main(void){

char nameOfKid[8];

int noOfLetters;
std::cin >> noOfLetters;
std::cin.ignore( 256, '\n') ;
int cur, temp, steps, newcur;
newcur = 0; cur = 0; steps= 0 ;
for (int i = 0 ; i < noOfLetters; ++i){

        std::cin.getline(nameOfKid, 8);

        temp = static_cast<int>(nameOfKid[0]);

        switch(temp){
            case 65:
            case 80:
            case 79:
            case 82: newcur = 1;
                   break;
            case 66:
            case 77:
            case 83: newcur = 2;
                   break;
            case 68:
            case 71:
            case 74:
            case 75:
            case 84: newcur = 3;
                   break;

        }
        if ((newcur!=cur) && (i!=0)){
        steps = steps + ((newcur>cur) ? (newcur-cur): (cur-newcur));

        }
        cur = newcur;

    }

std::cout << steps;
return 0;
}

#include <iostream>
#include <vector>
#include <string>
using namespace std;

int box(char a)
{
    switch (a)
    {
    case 'A': case 'P': case 'O': case 'R':
        return 1;
    case 'B': case 'M': case 'S':
        return 2;
    default:
        return 3;
    }
}


int main()
{
    int n;
    cin >> n;
    string a;
    vector<char>f(n);
    for (int i = 0; i < n; i++)
    {
        cin >> a;
        f[i] = a[0];
    }
    int steps = 0;
    int pos = 1;
    for (int i = 0; i < n; i++)
    {
        steps += abs(pos - box(f[i]));
        pos = box(f[i]);
    }
    cout << steps << endl;


    return 0;
}

#! /usr/bin/env python
# -*- coding: utf-8 -*-
from itertools import count


mailBox = {"Alice": 1, "Ariel": 1, "Aurora": 1,"Phil": 1, "Peter": 1,"Olaf": 1,"Phoebus": 1, "Ralph": 1, "Robin": 1,
           "Bambi": 2, "Belle": 2,"Bolt": 2, "Mulan": 2,"Mowgli": 2,"Mickey": 2,"Silver": 2,"Simba": 2,"Stitch": 2,
           "Dumbo": 3, "Genie": 3,"Jiminy": 3, "Kyzko": 3,"Kida": 3,"Kenai": 3,"Tarzan": 3,"Tiana": 3,"Winnie": 3,
           }

# кол-во писем
n = int(raw_input())
# list с именами адресатов
inputMailFrom = []
# цикл по заполению адресатов
for n in range(n):
    inputMailFrom.append(mailBox.get(raw_input()))
step = []


if len(inputMailFrom) == 1:
    if  inputMailFrom[0] == 1:
        print (0)
    if inputMailFrom[0] == 2:
        print (1)
    if inputMailFrom[0] == 3:
        print (2)
else:
    for i in range(n):
        step.append(abs(inputMailFrom[i]-inputMailFrom[i+1]))
    print (sum(step)

n=int(input())
s1=['Alice','Ariel','Aurora','Phil','Peter','Olaf','Phoebus','Ralph','Robin' ]
s2=['Bambi','Belle', 'Bolt','Mulan','Mowgli','Mickey','Silver','Simba','Stitch']
s3=['Dumbo','Genie','Jiminy','Kuzko','Kida','Kenai','Tarzan','Tiana','Winnie']
a=s1
k=0
for i in range(n):
    s=input()
    if s in s1:
        if a==s1:
            continue
        elif a==s2:
            k+=1
            a=s1
        elif a==s3:
            k+=2
            a=s1
    elif s in s2:
        if a==s1:
            k+=1
            a=s2
        elif a==s2:
            continue
        elif a==s3:
            k+=1
            a=s2
    elif s in s3:
        if a==s1:
            k+=2
            a=s3
        elif a==s2:
            k+=1
            a=s2
        elif a==s3:
            continue
print(k)

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string box1[3][3] = {    "Alice", "Ariel","Aurora",
                            "Phil", "Peter", "Olaf",
                            "Phoebus", "Ralph", "Robin"
                        };
    string box2[3][3] = {    "Bambi", "Belle", "Bolt",
                            "Mulan", "Mowgli", "Mickey",
                            "Silver", "Simba", "Stitch"
                        };
    string box3[3][3] = {    "Dumbo", "Genie", "Jiminy",
                            "Kuzko", "Kida", "Kenai",
                            "Tarzan", "Tiana", "Winnie"
                        };
    int n, step;
    string names;
    bool here1, here2, here3;
     here2 = here3 = false;
     here1 = true;
    step = 0;
    cin >> n;
    for (int m = 0; m < n; m++)
    {
        cin >> names;
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                if (box1[i][j] == names)
                {
                    here1 = true;
                    if (here2)
                    {
                        step++;
                    }
                    else
                        if (here3)
                        {
                            step = step + 2;
                        }
                    here2 = false;
                    here3 = false;
                    break;
                }
            }
        }
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                if (box2[i][j] == names)
                {
                    here2 = true;
                    if (here1)
                    {
                        step++;
                    }
                    else
                        if (here3)
                        {
                            step++;
                        }
                    here1 = false;
                    here3 = false;
                    break;
                }
            }
        }
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                if (box3[i][j] == names)
                {
                    here3 = true;
                    if (here2)
                    {
                        step++;
                    }
                    else
                        if (here1)
                        {
                            step = step + 2;
                        }
                    here1 = false;
                    here2 = false;
                    break;
                }
            }
        }
    }
    cout << step << endl;
    return 0;
}

#include<iostream>
#include<string>
using namespace std;
int main()
{
    int n,k=0;
    char t,s;
    cin>>n;
    string a[1001];
    for(int i=0;i<n;i++)
        cin>>a[i];
    for(int i=0;i<n-1;i++)
    {
        t=a[i][0];
        s=a[i+1][0];

        if((t=='A' || t=='P' || t=='O' || t=='R') &&
           (s=='A' || s=='P' || s=='O' || s=='R'))
           k+=0;
        if((t=='A' || t=='P' || t=='O' || t=='R') &&
           (s=='B' || s=='M' || s=='S'))
           k+=1;
        if((t=='A' || t=='P' || t=='O' || t=='R') &&
           (s=='D' || s=='G' || s=='J' || s=='K' || s=='T' || s=='W'))
           k+=2;

        if((t=='B' || t=='M' || t=='S') &&
           (s=='B' || s=='M' || s=='S'))
           k+=0;
        if((t=='B' || t=='M' || t=='S') &&
           (s=='A' || s=='P' || s=='O' || s=='R'||
            s=='D' || s=='G' || s=='J' || s=='K' || s=='T' || s=='W'))
           k+=1;

        if((t=='D' || t=='G' || t=='J' || t=='K' || t=='T' || t=='W') &&
           (s=='D' || s=='G' || s=='J' || s=='K' || s=='T' || s=='W'))
           k+=0;
        if((t=='D' || t=='G' || t=='J' || t=='K' || t=='T' || t=='W') &&
           (s=='B' || s=='M' || s=='S'))
           k+=1;
        if((t=='D' || t=='G' || t=='J' || t=='K' || t=='T' || t=='W') &&
           (s=='A' || s=='P' || s=='O' || s=='R'))
           k+=2;
    }

    cout<<k;
    return 0;
}

Edited by author 27.07.2018 02:09

#include<iostream>
#include<cstdio>
using namespace std;

int main()
{

        int n, a = 1, counter = 0;
        string s;
        cin >> n;

        for (int i = 0; i < n; ++i)
         {
          cin >> s;
                if (s[0] == 'A' || s[0] == 'P' ||s[0] == 'O' ||s[0] == 'R' &&  a == 2){ a = 1; counter++;}
            else
                 if (s[0] == 'A' || s[0] == 'P' ||s[0] == 'O' ||s[0] == 'R' &&  a == 3){ a = 1; counter +=2;}

                 if (s[0] == 'B' || s[0] == 'M' ||s[0] == 'S' &&  a == 1){ a = 2; counter++;}

            else

                 if (s[0] == 'B' || s[0] == 'M' ||s[0] == 'S' &&  a == 3){ a = 2; counter++;}


                if (s[0] == 'D' || s[0] == 'G' ||s[0] == 'K' ||s[0] == 'T' || s[0] == 'W' &&  a == 1){ a = 3; counter +=2;}

            else

                if (s[0] == 'D' || s[0] == 'G' ||s[0] == 'K' ||s[0] == 'T' || s[0] == 'W' &&  a == 2){ a = 3; counter++;}



        }

        cout << counter;
        return 0;

}

Hello. Task number is 2023.
Timus flatly refuses to accept. He had a lot of tests, but he did not find any flaws. Maybe someone will tell me, otherwise I'll kill myself tomorrow.

n = int(input())
zn = [1]
k=0
y = 0
sh1 = ('Alice', 'Ariel', 'Aurora', 'Phil', 'Peter', 'Olaf', 'Phoebus', 'Ralf', 'Robin')
sh2 = ('Bambi', 'Belle', 'Bolt', 'Mulan', 'Mowgli', 'Mickey', 'Silver', 'Simba', 'Stitch')
for j in range (n):
    i = input()
    if i in sh1:
        zn.append (1)
    elif i in sh2:
        zn.append (2)
    else:
        zn.append (3)
    n-=1
for k in range (len(zn)):
    y+= abs ((int(zn [k-1]))-int(zn [k]))
lop = y-zn[-1]+1
print (lop)

#include<iostream>
using namespace std;
int n,i,k,t,j;
string a[10000],b[10000],c[10000],d[10000];
int main(){
        a[1]="Alice"; a[4]="Phil";  a[7]="Phoebus";
        a[2]="Ariel"; a[5]="Peter";  a[8]="Ralph";
        a[3]="Aurora"; a[6]="Olaf";     a[9]="Robin";

        b[1]="Bambi"; b[4]="Mulan";  b[7]="Silver";
        b[2]="Belle"; b[5]="Mowgli";  b[8]="Simba";
        b[3]="Bolt";  b[6]="Mickey";  b[9]="Stitch";

        c[1]="Dumbo"; c[4]="Kuzko"; c[7]="Tarzan";
        c[2]="Genie"; c[5]="Kida";  c[8]="Tiana";
        c[3]="Jiminy"; c[6]="Kenai"; c[9]="Winnie";
        cin>>n;
            for(i=1; i<=n; i++) cin>>d[i];
                for(i=1; i<=n; i++) {
                    for(j=1; j<=9; j++)  if(d[i]==a[j]){
                    if(t==0) k+=0;
                    if(t==1) k+=1;
                    if(t==2) k+=1;
                    if(t==3) k+=2;
                    t=1;
                    break;
                    }
                    for(j=1; j<=9; j++)  if(d[i]==b[j]){
                    if(t==0) k+=0;
                    if(t==1) k+=1;
                    if(t==2) k+=1;
                    if(t==3) k+=1;
                    t=2;
                    break;
                    }
                    for(j=1; j<=9; j++) if(d[i]==c[j]) {
                    if(t==0) k+=0;
                    if(t==1) k+=2;
                    if(t==2) k+=1;
                    if(t==3) k+=1;
                     t=3;
                     break;
                     }
}
            cout<<k;
}

using System;

namespace Csharp_2023
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int num = 1;
            int sum = 0;

            for (int z = 1; z <= n; z++)
            {
                string str1 = Console.ReadLine();

                for (int f = 1; f <= n; f++)
                {
                    if (str1[0] == 'A' || str1[0] == 'P' || str1[0] == 'O' || str1[0] == 'R')
                    {
                        if (num == 1) sum += 0;
                        else if (num == 2) sum += 1;
                        else if (num == 3) sum += 2;
                        num = 1;
                        break;
                    }
                    else if (str1[0] == 'B' || str1[0] == 'M' || str1[0] == 'S')
                    {
                        if (num == 1) sum += 1;
                        else if (num == 2) sum += 0;
                        else if (num == 3) sum += 1;
                        num = 2;
                        break;
                    }
                    else if (str1[0] == 'D' || str1[0] == 'G' || str1[0] == 'J' || str1[0] == 'K' || str1[0] == 'T' || str1[0] == 'W')
                    {
                        if (num == 1) sum += 2;
                        else if (num == 2) sum += 1;
                        else if (num == 3) sum += 0;
                        num = 3;
                        break;
                    }
                }
            }
         Console.WriteLine(sum);
        }
    }
}

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
    string s;
    int a=1;
    int counter=0;
    for(int i=0; i<n; i++)
    {
        cin>>s;
        if((s[0]=='A' || s[0]=='P' || s[0]=='R' || s[0]=='O' ) && a==2) { a=1; counter++;}
        else
        if((s[0]=='A' || s[0]=='P' || s[0]=='R' || s[0]=='O' ) && a==3) { a=1; counter+=2;}
        else
        if((s[0]=='B' || s[0]=='M' || s[0]=='S') && a==1){ a=2; counter++;}
        else
        if((s[0]=='B' || s[0]=='M' || s[0]=='S') && a==3){ a=2; counter++;}
        else
        if((s[0]=='D' || s[0]=='G' || s[0]=='J' || s[0]=='K' || s[0]=='T' || s[0]=='W' ) && a==1) { a=3; counter+=2;}
        else
        if((s[0]=='D' || s[0]=='G' || s[0]=='J' || s[0]=='K' || s[0]=='T' || s[0]=='W' ) && a==2) { a=3; counter++;}

    }
    cout<<counter;
    system("pause");
    return 0;
}

#include<iostream>
#include<cstring>
#include<cmath>
using namespace std;
int main(){
    string st;
    int W,n,i=0,A[1000];
    cin >> n;
    do{
        cin >> st;
        if(((int)st[0]==65)||((int)st[0]==80)||((int)st[0]==79)||((int)st[0]==82)) A[i]=1;
        if(((int)st[0]==66)||((int)st[0]==77)||((int)st[0]==83)) A[i]=2;
        if(((int)st[0]==68)||((int)st[0]==71)||((int)st[0]==74)||((int)st[0]==75)||((int)st[0]==84)||((int)st[0]==87)) A[i]=3;
        i++;
    }while(i<n);
    for(i=0;i<n-1;i++) {
        int S;
    S=abs(A[i]-A[i+1]);
    W+=S;
    }
    cout<<W;
    return 0;
}
Please,help me!!!

#include <iostream>
#include <cstring>
#include <string>
#include <cmath>
using namespace std;

int shkaf(string name) {
    string mas1[9] = { "Alice", "Ariel", "Aurora", "Phil", "Peter", "Olaf", "Phoebus", "Ralph", "Robin" };
    string mas2[9] = {"Bambi", "Belle", "Bolt","Mulan", "Mowgle", "Mickey", "Silver", "Simba", "Stitch" };
    string mas3[9] = { "Dumbo", "Genie", "Jiminy", "Kuzko", "Kida", "Kenai", "Tarzan", "Tiana","Winnie" };
    for (int i = 0; i < 9; i++) {
        if (name == mas1[i])return 1;
        if (name == mas2[i])return 2;
        if (name == mas3[i]) return 3;
    }
}

int main() {
    int N, s=0,a1=1,a2=1;
    string name;
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin>>name;
        a2=shkaf(name);
        s += abs(a2 - a1);
        a1 = a2;
    }
    cout << s;

    return 0;
}

/*
Le Van Manh
Hanoi University Of Science And Technology
Viet Nam
*/
#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;
int readAddressToValue(){
    int v = 0;
    string a;
    cin>>a;
    if(
        a=="Alice"||a=="Ariel"||a=="Aurora"||
        a=="Phil"||a=="Peter"||a=="Olaf"||
        a=="Phoebus"||a=="Ralph"||a=="Robin"){
        v = 0;
    }else
    if(
        a=="Bambi"||a=="Belle"||a=="Bolt"||
        a=="Mulan"||a=="Mowgli"||a=="Mickey"||
        a=="Silver"||a=="Simba"||a=="Stitch"){
        v = 1;
    }else{
        v = 2;
    }
    return v;
}
int main(){

    int address0;
    int address1;
    int steps = 0;
    int n;
    cin>>n;

    address0 = readAddressToValue();
    steps+= address0 - 0;
    for(int i=1;i<n;i++){
        address1 = readAddressToValue();
        steps += abs(address1 - address0);
        address0 = address1;
    }

    cout<<steps;
    return 0;
}

Edited by author 20.02.2016 13:17