제출 #442945

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
442945		zxcvbnm	Kas (COCI17_kas)	C++14	50 / 100	22 ms	468 KiB

kas

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<int> a(n);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }

    assert(n <= 13);
    int mx = accumulate(a.begin(), a.end(), 0);
    int big_sum = 0;

    for(int mask = 0; mask < (1 << n); mask++) {
        vector<int> b;
        int curr = 0;
        for(int i = 0; i < n; i++) {
            if (mask & (1 << i)) {
                b.push_back(a[i]);
            } else {
                curr += a[i];
            }
        }

        int m = b.size();
        int k = accumulate(b.begin(), b.end(), 0);
        if (k % 2 || big_sum > k/2) continue;

        for(int mask2 = 0; mask2 < (1 << m); mask2++) {
            int sum1 = 0, sum2 = 0;
            for(int i = 0; i < m; i++) {
                if (mask2 & (1 << i)) {
                    sum1 += b[i];
                } else {
                    sum2 += b[i];
                }
            }
            if (sum1 == sum2) {
                mx = sum1 + curr;
                big_sum = sum1;
                break;
            }
        }
    }
    cout << mx << "\n";
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10