Submission #723816

#	Time	Username	Problem	Language	Result	Execution time	Memory
723816		OttincaM	Hacker (BOI15_hac)	C++17	0 / 100	1 ms	212 KiB

hac

#include <iostream>
#include <vector>
#include "stdio.h"
#pragma GCC optimize("Ofast,O3,unroll-loops")

using namespace std;

signed main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    #ifdef WTF
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
        freopen("error.txt", "w", stderr);
    #endif
 
    int n; cin >> n;
    vector <int> a(n + 1);
    for(int i = 1; i <= n; i ++){
        cin >> a[i];
    }

    vector <int> pr(n + 1, 0), sf(n + 2, 0);
    for(int i = 1; i <= n; i ++){
        pr[i] = pr[i - 1] + a[i];
    }  
    for(int i = n; i >= 1; i --){
        sf[i] = sf[i + 1] + a[i];
    }

    int ans = 0;
    for(int i = 1; i <= n; i ++){
        ans = max(ans, min(pr[i], sf[i]));
    }
    cout << ans << "\n";
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40