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답안 #865489

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
865489 2023-10-24T09:05:17 Z vjudge1 Sure Bet (CEOI17_sure) C++17
0 / 100
 1 ms 2396 KB 
//gm  --- akezhon
#include <bits/stdc++.h>
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define int long long
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define tm (tl+tr)/2
#define TL v+v, tl, tm
#define TR v+v+1, tm+1, tr
#define DA l <= tl && tr <= r
#define NET r < tl || tr < l
#define double long double
using namespace std;
const int N=1e5+7;
const int M=1e9+7;
const int inf=1e9;
double a[N], b[N];
int n;
void AlemAmenov(){
	
	cin >> n;
	for(int i=1; i <= n; i++){
		cin >> a[i] >> b[i];
	}
	sort(a+1, a+1+n);
	sort(b+1, b+1+n);
	reverse(a+1, a+1+n);
	reverse(b+1, b+1+n);
	
	int c1=n, c2=n;
	double aa=0, bb=0;
	for(int i=1; i <= n; i++){
		aa += a[i];
		bb += b[i];
	}
	double ans = min(aa, bb) - c1 - c2;
	while(1){
		if(c1 && ans <= min(aa-a[c1], bb) - c1 - c2 + 1){
			ans = min(aa-a[c1], bb) - c1 - c2 + 1;
			aa -= a[c1--];
		}
		else if(c2 && ans <= min(aa, bb-b[c2]) - c1 - c2 + 1){
			ans = min(aa, bb-b[c2]) - c1 - c2 + 1;
			bb -= b[c2--];
		}
		else if(c1 && c2 && ans <= min(aa-a[c1], bb-b[c2]) - c1 - c2 + 2){
			ans = min(aa-a[c1], bb-b[c2]) - c1 - c2 + 2;
			aa -= a[c1--];
			bb -= b[c2--];
		}
		else break;
	}
	cout << fixed << setprecision(4) << ans;
}
signed main(){

	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	// freopen("promote.in", "r", stdin);
	// freopen("promote.out", "w", stdout);
	int RealName=1;
	// cin >> RealName;
	// int C=0;
	while(RealName--){
		// cout << "Case " << ++C << ":\n";
		AlemAmenov();
	}

return 0;
}

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -