Submission #1225797

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225797		mariamp1	Sure Bet (CEOI17_sure)	C++20	0 / 100	0 ms	324 KiB

sure

#include <bits/stdc++.h>
using namespace std;

int main() {
    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());

    vector<double> sa(n+1, 0), sb(n+1, 0);
    for (int i = 0; i < n; i++) {
        sa[i+1] = sa[i] + a[i];
        sb[i+1] = sb[i] + b[i];
    }

    double res = 0;
    int j = n;
    for (int i = 0; i <= n; i++) {
        while (j > 0) {
            double pa = sa[i] - i - j;
            double pb = sb[j] - i - j;
            double pa2 = sa[i] - i - (j-1);
            double pb2 = sb[j-1] - i - (j-1);
            if (min(pa2, pb2) >= min(pa, pb)) j--;
            else break;
        }
        res = max(res, min(sa[i] - i - j, sb[j] - i - j));
    }

    cout << fixed << setprecision(4) << max(0.0, res) << "\n";
}

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