Submission #1225747

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225747		takoshanava	Sure Bet (CEOI17_sure)	C++20	100 / 100	76 ms	1864 KiB

sure

#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define fs first
#define sc second
using namespace std;

const int N = 100005;
double a[N], b[N];
int n;

signed main() {
    cin >> n;
    for (int i = 1; i <= n; i++)  {
        cin >> a[i] >> b[i];
    }
    sort(a + 1, a + 1 + n, greater<double>());
    sort(b + 1, b + 1 + n, greater<double>());
    double ans = 0;
    int p1 = 0; int p2 = 0;
    double c1 = 0, c2 = 0;
    while (true) {
        if (p1 >= n and p2 >= n) break;
        if (p1 >= n and p2 < n) {
            p2++;
            c2 += b[p2];
        }else if(p2 >= n and p1 < n) {
            p1++;
            c1 += a[p1];
        }else if(c1 <= c2) {
            p1++;
            c1 += a[p1];
        }else{ 
            p2++;
            c2 += b[p2];
        }
        ans = max(ans, min(c1, c2) - p1 - p2);
    } 
    cout << fixed << setprecision(4) << ans << endl;
}

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