I sent a code for problem C in this contest: http://codeforces.net/gym/100026 and I got runtime error (I didn't have runtime error in my computer nor in custom invocation). I couldn't find out where the error came from so I simplified my code (knowing it would get WA) to find the source. One of the last codes I sent was:
#include <bits/stdc++.h>
using namespace std;
struct punt{
int x,y;
};
typedef vector < punt > VE;
int n,k;
VE mines, pals;
int main(){
cin >> n >> k;
pals = VE(n);
mines = VE(k);
for(int i = 0; i < n; i++) {
int x,y;
cin >> x >> y;
pals[i] = {x,y};
}
for(int i = 0; i < k; i++) {
int x,y;
cin >> x >> y;
mines[i] = {x,y};
}
cout << "** " << mines[0].x << ' ' << mines[0].y << endl;
}
And I still got runtime error. Checking the test case with a friend who has "coach mode" enabled I could find out k != 0 (as it corresponds to first test case in the sample). The source of the runtime error is the access to mines[0] but I don't understand why. Moreover, when I change the last few lines to these ones:
for(int i = 0; i < k; i++) {
int x,y;
cin >> x >> y;
mines[i] = {x,y};
cout << "** " << mines[i].x << ' ' << mines[i].y << endl;
}
I don't get runtime error. Instead this message is shown
Can someone help me? Is it a CF problem or mine?
Auto comment: topic has been updated by NutelIa (previous revision, new revision, compare).
it's not standard input!
Thank you! (I shouldn't be programming that late in the night hahaha)