Submission #380708

#	Time	Username	Problem	Language	Result	Execution time	Memory
380708		MladenP	Sure Bet (CEOI17_sure)	C++17	100 / 100	92 ms	3820 KiB

sure

#include <bits/stdc++.h>
#define MAXN 100010
using namespace std;
double a[MAXN], b[MAXN];
int main() {
    ios::sync_with_stdio(false); cin.tie(0);
    int N; cin >> N;
    for(int i = 1; i <= N; i++) {
        cin >> a[i] >> b[i];
    }
    sort(a+1, a+1+N);
    reverse(a+1, a+1+N);
    sort(b+1, b+1+N);
    reverse(b+1, b+1+N);
    double rez = 0;
    int idxa = 1, idxb = 1;
    double suma = 0, sumb = 0;
    for(int i = 1; i <= 2*N; i++) {
        if(idxa == N+1) {
            sumb += b[idxb];
            idxb++;
        } else if(idxb == N+1) {
            suma += a[idxa];
            idxa++;
        } else {
            if(suma > sumb) {
                sumb += b[idxb];
                idxb++;
            } else {
                suma += a[idxa];
                idxa++;
            }
        }
        rez = max(rez, min(suma-i, sumb-i));
    }
    cout << fixed << setprecision(4) << rez << endl;
    return 0;
}

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