Submission #1112631

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112631		sunboi	Sure Bet (CEOI17_sure)	C++17	60 / 100	2060 ms	4680 KiB

sure

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

 
signed main(){
    double n; cin >> n;
    vector<double> a(n + 1), b(n + 1), pref(n + 1), prefb(n + 1);
    a[0] = 1e9;
    b[0] = 1e9;
    for (int i = 1; i <= n; i++){
        cin >> a[i];
        cin >> b[i];
    }
    sort(a.begin(), a.end());
    sort(b.begin(), b.end());
    reverse(a.begin(), a.end());
    reverse(b.begin(), b.end());
    a[0] = 0;
    b[0] = 0;
    for (int i = 1; i <= n; i++){
        pref[i] = pref[i - 1] + a[i];
        prefb[i] = prefb[i - 1] + b[i];
    }
    
    double ans = 0;
    for (double monedas = 0; monedas <= 2 * n; monedas++){
        for (int i = 0; i <= min(monedas, n); i++){
            int j = monedas - i;
            if (0 <= j && j <= n){
                ans = max(ans, min(pref[i] - monedas, prefb[j] - monedas));
            }
        }
    }
    printf("%.4lf",(double)ans);
}

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