#include <bits/stdc++.h>
using namespace std;
typedef long double ld;
int n;
ld a[100001];
ld b[100001];
ld pref[100001];
int main () {
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i] >> b[i];
}
sort(a + 1, a + n + 1);
sort(b + 1, b + n + 1);
reverse(a + 1, a + n + 1);
reverse(b + 1, b + n + 1);
ld mx = 0;
for (int i = 2; i <= n; i++) {
a[i] += a[i - 1];
b[i] += b[i - 1];
}
pref[1] = a[1] - 1;
for (int i = 2; i <= n; i++) {
pref[i] = max(pref[i - 1], a[i] - i);
}
for (int i = 1; i <= n; i++) {
int l = 1, r = n, ans = -1;
while (l <= r) {
int mid = (l + r) >> 1;
if (a[mid] < b[i]) {
l = mid + 1;
} else {
r = mid - 1; ans = mid;
}
}
if (ans != -1) {
mx = max(mx, b[i] - i - ans);
if (ans != -1) mx = max(mx, pref[ans - 1] - i);
} else {
mx = max(mx, pref[n] - i);
}
}
cout << fixed << setprecision(4) << mx << '\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4440 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4440 KB |
Output is correct |
| 17 |
Correct |
114 ms |
6484 KB |
Output is correct |
| 18 |
Correct |
110 ms |
6336 KB |
Output is correct |
| 19 |
Correct |
111 ms |
6480 KB |
Output is correct |
| 20 |
Correct |
118 ms |
6480 KB |
Output is correct |
| 21 |
Correct |
124 ms |
6736 KB |
Output is correct |
| 22 |
Correct |
110 ms |
6480 KB |
Output is correct |
| 23 |
Correct |
115 ms |
6484 KB |
Output is correct |
| 24 |
Correct |
134 ms |
6376 KB |
Output is correct |
| 25 |
Correct |
109 ms |
6340 KB |
Output is correct |
| 26 |
Correct |
129 ms |
6740 KB |
Output is correct |
