oj.uz

Submission #938327

# Submission time Handle Problem Language Result Execution time Memory
938327 2024-03-05T04:42:08 Z vjudge1 Sure Bet (CEOI17_sure) C++17
100 / 100
 111 ms 3148 KB 
///*                                                    __                    __                        __                    */
///*        ======     _      /| /|  __   _            /   |  |   /|  |   @  |    |  |  | /   /| |\  | /   |  |  @ | /        */
///* \-       ||  |_| |_     / |/ | |  | |_  |-        |   |--|  /-|  |   |  \ \  |==|  |-   /=| | \ | |   |--|  | |-         */
///*          ||  | | |_    /     | |__|  _| |_        \__ |  | /  |  |__ |  __|  |  |  | \ /  | |  \| \__ |  |  | | \        */
///* 
 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define int long long
typedef vector<int> vi;
typedef vector<double> vd;
typedef pair<int,int> pii;
typedef vector<pii> vii;
const int N = 3e5+50, inf = 1e18, mod = 1e9+7;

void solve(){
	int n;
	cin >> n;
	vd a(n+2, 0), b(n+2, 0);
	for(int i = 0; i < n; i++)cin >> a[i] >> b[i];
	sort(a.rbegin(), a.rend());
	sort(b.rbegin(), b.rend());
	double ans = 0;
	vd pr;pr.pb(0);
	for(auto i:b)pr.pb(pr.back()+i);
	double sma = 0, cnt = 0;
	for(int i = 0; i < n; i++){
		sma+=a[i];
		cnt++;
		int l = 0, r = n;
		while(l <= r){
			int m = (l+r)>>1;
			if(sma - (cnt+m) < pr[m] - (cnt+m)){
				r = m-1;
			}else{
				l = m+1;
			}
			ans = max(ans, min(sma-(cnt+m) , pr[m] - (cnt+m)));
		}
		//cout << '\n';
		
	}
	cout << fixed << setprecision(4);
	cout << ans << '\n';
}
main(){
	//ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int test = 1;
	//cin >> test;
	while(test--){
		solve();
	}
}

Compilation message

sure.cpp:50:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   50 | main(){
      | ^~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 101 ms 3128 KB Output is correct
18 Correct 101 ms 3020 KB Output is correct
19 Correct 101 ms 3016 KB Output is correct
20 Correct 101 ms 3136 KB Output is correct
21 Correct 111 ms 3128 KB Output is correct
22 Correct 101 ms 3148 KB Output is correct
23 Correct 101 ms 3016 KB Output is correct
24 Correct 102 ms 3128 KB Output is correct
25 Correct 100 ms 3144 KB Output is correct
26 Correct 110 ms 3020 KB Output is correct