I got accepted but the algoritm is wrong. It fails on
6 6 6 5 4 3 2
my answer = 2
the real answer = 0
(6+5+2 6+4+3)

#include <stdio.h>
int main(){
    int n;
    int sum(0), half(0);
    int stones[100000];
    scanf("%d",&n);
    for(int c=0; c<n;c++){
        scanf("%d",&stones[c]);
        sum+=stones[c];
    }
    half=sum/2;
    for(int c=0; c<n; c++)
        if(half>=stones[c])half-=stones[c];
    printf("%d\n",(half*2+sum%2));
}

i can be wrong, but i think your test consists three "6" while in your "real answer" there are only two of them)

You are wrong. Author wrote test in one line. First number is a count of stone. Right test
6
6 6 5 4 3 2, right answer 0, author answer 2.

Admins! Is really bug on this problem! Pleace add this test.

it fails also on 5 5 8 13 27 14 ....
the real answer is 3 but yours is 15!!

strange but admin did not add test for this wrong solution. i sent it(solution) to system and system accepted it!