제출 #1152530

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1152530		arkanefury	Sure Bet (CEOI17_sure)	C++20	0 / 100	0 ms	324 KiB

sure

#include <bits/stdc++.h>
#define pb push_back
using namespace std;
#define F first
#define sz size()
#define S second
#define in insert
#define lb lower_bound
#define int long long
#define all(v) v.begin(), v.end()
#define FOR(x, n, m, d) for(int x = n; x <= m; x += d)
#define FORR(x, n, m, d) for(int x = n; x >= m; x -= d)
#define nikita ios_base::sync_with_stdio(0), cin.tie(0);
const int N = 1e5+5;
int n,m,tt,sum=0,l, r, x, y, cnt, block = 448, res;
int a[N], b[N], c[N], dp[N], pref[N];
void solve() {
    cin >> n;
    double dx, dy, ans, k, sum1, sum2;
    set<pair<double, double>>v, vec;
    FOR(i, 1, n, 1){
        cin >> dx >> dy;
        v.in({dx, dy});
        vec.in({dy, dx});
    }
    ans = 0;
    int ko = 0;
    FOR(i, 1, n, 1){
        if(sum1 >= sum2){
            pair<double, double>ok = *vec.rbegin();
            sum2 += ok.F;
            v.erase(*vec.rbegin());
            vec.erase(*vec.rbegin());
        }
        else{
            pair<double, double>ok = *v.rbegin();
            sum1 += ok.F;
            vec.erase(*v.rbegin());
            v.erase(*v.rbegin());
        }
        ko ++;
        k = min(sum1, sum2);
        ans = max(ans, k - ko);
    }
    printf("%.4lf",(double)ans);
}
signed main()
{
    nikita
    tt = 1;
    if(!tt)cin >> tt;
    FOR(i, 1, tt, 1){
    solve();
    }
}

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