Submission #498449

# Submission time Handle Problem Language Result Execution time Memory
498449 2021-12-25T08:12:21 Z syrtin Sure Bet (CEOI17_sure) C++17
100 / 100
92 ms 3012 KB
#include <bits/stdc++.h>
#define pb push_back
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
using namespace std;
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair < int, int > pii;
typedef vector<int> vi;
typedef vector<long long> vll;
const int N = 2e5 + 123;
const ll mod = 1e9 + 7;
void solve(){
	int n, cnt = 0;
	cin >> n;
	double a[n], b[n], out = 0, s = 0;
	for(int i = 0; i < n; i++) {
		cin >> a[i] >> b[i];
	}
	sort(a, a + n), sort(b, b + n);
	for(int i = n - 2; i >= 0; i--) b[i] += b[i + 1];
	for(int i = n - 1; i >= 0; i--) {
		s += a[i] - 1;
		int p = s;
		cnt++;
		int l = max(n - 1 - p, -1), r = n;
		while(l + 1 < r) {
			int mi = l + (r - l) / 2;
			if(b[mi] - cnt <= s)r = mi;
			else l = mi;
		}
		if(r != n)out = max(out, b[r] - cnt - (n - r));
		if(r)out = max(out, s - (n - r) - 1);
	}
	cout << fixed << setprecision(4) << out;
}
int main() {
    //freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	ios_base::sync_with_stdio(false);
	cin.tie(0);
    int times = 1;
	//cin >> times;
    while(times--)solve();
    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 312 KB Output is correct
9 Correct 1 ms 312 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 312 KB Output is correct
9 Correct 1 ms 312 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 72 ms 2896 KB Output is correct
18 Correct 83 ms 2852 KB Output is correct
19 Correct 79 ms 2940 KB Output is correct
20 Correct 73 ms 2856 KB Output is correct
21 Correct 83 ms 2996 KB Output is correct
22 Correct 72 ms 2888 KB Output is correct
23 Correct 71 ms 2932 KB Output is correct
24 Correct 83 ms 2860 KB Output is correct
25 Correct 92 ms 2844 KB Output is correct
26 Correct 82 ms 3012 KB Output is correct