Submission #841513

#	Time	Username	Problem	Language	Result	Execution time	Memory
841513		treewave	Sure Bet (CEOI17_sure)	C++17	20 / 100	1 ms	212 KiB

sure

#include <bits/stdc++.h>

using namespace std;

#define double long double

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n; cin >> n;
    vector<double> a(n), b(n);
    for (int i = 0; i < n; i++){
        cin >> a[i] >> b[i];
    }
    sort(a.rbegin(), a.rend());
    sort(b.rbegin(), b.rend());

    double ans = 0, sa = 0, sb = 0, ptr_a = 0, ptr_b = 0;
    for (int i = 1; i <= 2 * n; i++){
        if (sa < sb && ptr_a != n){
            sa += a[ptr_a];
            ptr_a++;
        }
        else{
            sb += b[ptr_b];
            ptr_b++;
        }
        ans = max(ans, min(sa, sb) - i);
    }
    printf("%.4Lf\n", ans);
}

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