Submission #467364

#	Time	Username	Problem	Language	Result	Execution time	Memory
467364		idk321	Sure Bet (CEOI17_sure)	C++17	60 / 100	95 ms	3668 KiB

sure

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

const int N = 100005;
double odds [2][N];



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

    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> odds[0][i] >> odds[1][i];
    }
    sort(odds[0], odds[0] + n, greater<double>());
    sort(odds[1], odds[1] + n, greater<double>());

    double res = 0;
    double val1 = 0;
    double val2 = 0;
    int a =  0;
    int b =  0;
    for (int i = 0; i < 2 * n; i++) {
        if (i == 0) {
            val1 += odds[0][a];
            a++;
            res = max(res, min(val1, val2) - a - b);
        } else {
            if (val1 < val2 && a != n) {
                val1 += odds[0][a];
                a++;
                res = max(res, min(val1, val2) - a - b);
            } else {
                val2 += odds[1][b];
                b++;
                res = max(res, min(val1, val2) - a - b);
            }
        }
    }

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

/*
4
1.4 3.7
1.2 2
1.6 1.4
1.9 1.5
*/

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