Submission #559201

#	Time	Username	Problem	Language	Result	Execution time	Memory
559201		fatemetmhr	Sure Bet (CEOI17_sure)	C++17	100 / 100	101 ms	3920 KiB

sure

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second
#define pb       push_back

const int maxn5 = 1e6 + 10;

vector <double> av[2];


int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);

    int n; cin >> n;
    for(int i = 0; i < n; i++){
        double a, b; cin >> a >> b;
        av[0].pb(a);
        av[1].pb(b);
    }
    sort(all(av[0])); reverse(all(av[0]));
    sort(all(av[1])); reverse(all(av[1]));

    for(int i = 1; i < n; i++){
        av[0][i] += av[0][i - 1];
        av[1][i] += av[1][i - 1];
    }

    double ans = 0;

    for(int i = 0; i < n; i++){
        int pt = lower_bound(all(av[0]), av[1][i]) - av[0].begin();
        if(pt < n)
            ans = max(ans, av[1][i] - i - pt - 2);
        pt = lower_bound(all(av[1]), av[0][i]) - av[1].begin();
        if(pt < n)
            ans = max(ans, av[0][i] - i - pt - 2);
    }

    cout << setprecision(4) << fixed << ans << endl;

}

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