Submission #504125

#	Time	Username	Problem	Language	Result	Execution time	Memory
504125		t0nhou	Sure Bet (CEOI17_sure)	C++17	100 / 100	90 ms	3524 KiB

sure

#include <bits/stdc++.h>
#define endl '\n'

using namespace std;

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

    int n; cin >> n;

    vector<double> l(n), r(n);
    for(int i = 0; i < n; i++)
        cin >> l[i] >> r[i];

    sort(l.begin(), l.end()); sort(r.begin(), r.end());
    reverse(l.begin(), l.end()); reverse(r.begin(), r.end());

    int q1 = 1, q2 = 1;
    double s1 = l[0], s2 = r[0];
    double maior = max((double)0, min(s1 - 2, s2 - 2));

    while(true){
        if(s1 < s2){
            if(q1 >= n || l[q1] == 1) break;
            s1 += l[q1];
            q1++;
        }else{
            if(q2 >= n || r[q2] == 1) break;
            s2 += r[q2];
            q2++;
        }
        maior = max(maior, min(s1 - (q1+q2), s2 - (q1+q2)));
    }

    cout.precision(4);
    cout << fixed;

    cout << maior << endl;

    return 0;
}

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