이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
const int N = 1000100;
int ans = 0, a[N], n;
bool ed = 0;
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
#ifdef _LOCAL
freopen("in.txt","r",stdin);
#endif // _LOCAL
cin >> n;
for (int i = 0; i < n; i++)
cin >> a[i];
int lf = 0, rt = n - 1;
while (!ed){
while (a[lf] != a[rt]){
if (lf + 1 == rt){
ans++;
ed = 1;
}
if (a[lf] < a[rt]){
a[lf + 1] += a[lf];
lf++;
ans++;
} else {
a[rt - 1] += a[rt];
rt--;
ans++;
}
}
if (lf + 1 >= rt - 1)
ed = 1;
else {
lf++;
rt--;
}
}
cout << ans;
return 0;
}
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