ENG  RUS Timus Online Judge
Online Judge
Problems
Authors
Online contests
Site news
Webboard
Problem set
Submit solution
Judge status
Guide
Register
Authors ranklist
Current contest
Scheduled contests
Past contests
Rules
back to board

## Discussion of Problem 2030. Awesome Backup System

Runtime Error (access violation) #17
Posted by Majin Boo 1 Dec 2015 02:10
Why Runtime Error?

#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
unsigned short n, m;
scanf("%hu", &n);
vector <unsigned long long> bytes(n);
vector <vector<unsigned short> > red(n);
for(unsigned short i=0;i<n;i++) scanf("%llu", &bytes[i]);
for(unsigned short i=1;i<n;i++) {
unsigned short x, y;
scanf("%hu %hu", &x, &y);
red[x-1].push_back(y);
red[y-1].push_back(x); }
if(n>1) {
for(unsigned short i=0;i<red.size();i++) sort(red[i].begin(), red[i].end());
for(unsigned short i=0;i<red.size();i++) {
for(unsigned short j=0;j<red[i].size()-1;j++) {
if(red[i][j]==red[i][j+1]) {
for(unsigned short pos=j+1;pos<red[i].size()-1;pos++) red[i][pos] = red[i][pos+1];
red[i].pop_back(); }
}
}
}
scanf("%hu", &m);
for(int i=0;i<m;i++) {
unsigned short v, t;
scanf("%hu %hu", &t, &v);
if(t==1) {
for(unsigned j=0;j<red[v-1].size();j++) bytes[red[v-1][j]-1] += bytes[v-1]; }
if(t==2) printf("%llu\n", bytes[v-1]%1000000007); }
}