Submission #445968

# Submission time Handle Problem Language Result Execution time Memory
445968 2021-07-20T09:42:08 Z negar_a Sure Bet (CEOI17_sure) C++14
100 / 100
134 ms 8260 KB
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
#define S second
#define F first
#define pb push_back
#define mp make_pair
#define pii pair <int, int>
#define fast_io ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int maxn = 1e5 + 5;
ld a[maxn], b[maxn], ps1[maxn], ps2[maxn];

int main(){
	fast_io;
	int n;
	cin >> n;
	for(int i = 0; i < n; i ++){
		cin >> a[i] >> b[i];
	}
	sort(a, a + n, greater <ld>());
	sort(b, b + n, greater <ld>());
	
	ps1[0] = a[0]; ps2[0] = b[0];
	for(int i = 1; i < n; i ++){
		ps1[i] = ps1[i - 1] + a[i];
		ps2[i] = ps2[i - 1] + b[i];
		//cout << ps1[i] << " " << ps2[i] << endl;
	}
	ld ans = 0;
	for(int i = 0; i < n; i ++){
		int x = lower_bound(ps2, ps2 + n, ps1[i]) - ps2;
		if(x == n){
			continue;
		}
		ans = max(ans, ps1[i] - (i + x + 2));
	}
	for(int i = 0; i < n; i ++){
		int x = lower_bound(ps1, ps1 + n, ps2[i]) - ps1;
		if(x == n){
			continue;
		}
		ans = max(ans, ps2[i] - (i + x + 2));
	}
	cout << setprecision(4) << fixed << ans;
	
	return 0;
}
/*
4
1.4 3.7
1.2 2
1.6 1.4
1.9 1.5
*/
# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 124 ms 7908 KB Output is correct
18 Correct 128 ms 7900 KB Output is correct
19 Correct 127 ms 7940 KB Output is correct
20 Correct 120 ms 8004 KB Output is correct
21 Correct 134 ms 8260 KB Output is correct
22 Correct 125 ms 7868 KB Output is correct
23 Correct 128 ms 7876 KB Output is correct
24 Correct 128 ms 7832 KB Output is correct
25 Correct 120 ms 7864 KB Output is correct
26 Correct 132 ms 8260 KB Output is correct