Submission #1019691

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019691		overwatch9	Sure Bet (CEOI17_sure)	C++17	20 / 100	59 ms	348 KiB

sure

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    int n;
    cin >> n;
    vector <pair <double, double>> nums(n);
    for (int i = 0; i < n; i++) {
        double a, b;
        cin >> a >> b;
        nums[i].first = a;
        nums[i].second = b;
    }
    double ans = 0;
    for (int i = 0; i < (1 << (2 * n)); i++) {
        double l = 0, r = 0;
        double cnt = __builtin_popcount(i);
        for (int j = 0; j < 2*n; j++) {
            if (i & (1 << j)) {
                if (j % 2 == 0)
                    l += nums[j/2].first;
                else
                    r += nums[j/2].second;
            }
        }
        ans = max(ans, min(l, r) - cnt);
    }
    printf("%.4lf", ans);
}

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