I have 1 test runs but on the server WA test 1!!???

program pro;
var n,k,t:byte; s:string; sum:integer;
BEGIN
read(n,s); t:=1; k:=length(s)-1;
      if n mod k=0 then begin
                        sum:=n;
                        while n-t*k>0 do begin
                                         sum:=sum*(n-t*k); t:=t+1;
                                         if sum*(n-t*k)<0 then break;
                                         end;
                        sum:=sum*k;
                        end else
                        begin
                        sum:=n;
                        while n-t*k>0 do begin
                                         sum:=sum*(n-t*k); t:=t+1;
                                         if sum*(n-t*k)<0 then break;
                                         end;
                        sum:=sum*(n mod k);
                        end;
write(sum);
END.

9 !! My program write 945 and why WA 1??????

Каким должен быть ответ ,если значения n или k не валидны?
Например, если не указать k. Или ввести значения, не попадающие в диапазон?

I think description of the problem should state that "long numbers have to be used".
So for this problem use long integers.

I think description of the problem should state that "long numbers have to be used".
So for this problem use long integers.

Определение:
n!!…! = n(n−k)(n−2k), где k - количество знаков "!".
При расчете на любом этапе не должно получатся отрицательного числа.

И все.
Я только с таким условием получил "Accepted".

var
   f,i:longint; k:1..20; n:1..10;
   s:string;
begin
   readln(n);
   read(s);
   f:=1;
   k:=length(s);
   for i:=0 to (n div k)-1 do begin
   f:=f*(n-i*k);  end;
   writeln(f); end.

Here's my code,and I don't know what's wrong with it?
#include<iostream>
using namespace std;
char s[25];
int main()
{
    __int64 n,k;
    while(scanf("%I64d%s",&n,s)!=-1)
    {
        k=strlen(s);
        if(n<=k)
        {
            printf("%I64d\n",n);
        }
        else
        {
            __int64 sum=1,i;
            if(n%k==0)
            {
                for(i=n;i>=k;i-=k)
                    sum*=i;
            }
            else
            {
                for(i=n;i>=n%k;i--)
                    sum*=i;
            }
            printf("%I64d\n",sum);
        }
    }
    return 0;
}

Edited by author 15.06.2013 12:54

Edited by author 15.06.2013 12:56

var
   n,i,j,ans:Integer;
   k:integer;
   kvoskl:string;
begin
ans:=1;
j:=1;
     read(n,kvoskl);
     k:=length(kvoskl);
     i:=n;
     if n mod k = 0 then
     begin
          while i>=k do
          begin
               ans:=ans*i;
               i:=n-j*k;
               inc(j);
          end;
     end
     else
     begin
          while i>=n mod k do
          begin
               ans:=ans*i;
               i:=n-j*k;
               inc(j);
          end;
     end;
writeln(ans);
end.

what`s wrong?

9 !! - ввод
945 - вывод
пишет wrong answer

var n,i:integer;
    res:longint;
    k:string;
begin
read(n,k);
i:=0;
res:=1;
 if n mod length(k)=0 then
 repeat
  res:=res*(n-i);
  inc(i,length(k));
 until n-i=length(k)
 else
  repeat
   res:=res*(n-i);
   inc(i,length(k));
  until n-i=1;
writeln(res);
end.

It works but here i get Compilation Error

#include <iostream>
using namespace std;

int main(){
    int num, val, numMod;
    string nFuc;
    cin >> num >> nFuc;

    int i = nFuc.length();

    int mod = num % i;
    if(mod != 0){
        numMod = num;
        val = numMod;
        while(numMod != mod){
            numMod -= i;
            val *= numMod;
            }
        }

    else if(mod == 0){
        numMod = num;
        val = numMod;
        while(numMod > i){
            numMod -= i;
            val *= numMod;
            }
        }

    cout << val << endl;
}

#include <stdio.h>

int fact(int n, int k){
    int res = 1;
    if (n == 0)
        return res;
    while (n > k) {
         res *= n;
         n -= k;
    }
    if (n % k)
        res *= (n % k);
    else
        res *= k;
    return res;
}

int main () {
    char sym;
    int n = 0;
    int symCount = 0;
    scanf("%d ", &n);
    while (scanf("%1[!]", &sym) == 1) {
            symCount++;
    }
    printf("%d\n", fact(n, symCount));
    return 0;
}

I don't know why this error occurs, even the execution time is less then the time limit????
Please help me out?

what's wrong?
#include <stdio.h>
#include <conio.h>

main()
{
      int a,len=0,t=1;
      char b[20];
      scanf("%d%s",&a,b);
      len = strlen(b);
      for( ; a > 1 ; a -= len )
           t *= a;
      printf("%d",t);
      return 0;
}

please anyone help me if accepted . it gives me wrong answer on test 1 and as i suppose in test 1 k=0 and i don't know what write :) thanks...

plz explain what this test no shows ?

Edited by author 06.08.2012 17:08

import java.util.*;
public class MyFact
{
    int factorial(int n,int k)
    {
        int res;
        if(n==1) return 1;
        else if((n-1)%k!=0) return 1;

        res=factorial(n-k,k)*n;
        return res;

    }


    public static void main(String [] args)
    {
        int fact=1;

        MyFact f=new MyFact();

        Scanner in=new Scanner(System.in);
        int n=in.nextInt();

        int k=in.nextInt();
        System.out.print(+f.factorial(n,k));
    }
}

Edited by author 05.06.2012 18:20

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Factorize
{
    class Program
    {
        static int capture(string a)
        {
            return( a.Length - 3);
        }
        static  int calculate(string a)
        {
            int i,n = 0,sum=1,x=0,y=0,count=0;
        if (a[1] != '0')
            a = '0' + a;
        n = capture(a);

        if (a[0] == '1')
            x = 10;
        else
            x = a[1] - '0';
        count = x;
        sum = x;
        for (i = 0; i > -1; i++)
        {
            if ((count-n) <= 1)
                break;
            else
            {
                sum= sum * (x - n);
                count = count- n;
                x = count;
            }
        }
            return sum;
    }
        static void Main(string[] args)
        {
            string a;
            int sum = 0;
            a = Console.ReadLine();
            sum = calculate(a);
                Console.WriteLine(sum);

        }
    }
}




I copy source code then it told me compilation error?

Edited by author 07.04.2008 14:47

I don't know what's wrong, but it seems that i get wrong answer on test 11. Do you have any idea what it contains?