Submission #928574

# Submission time Handle Problem Language Result Execution time Memory
928574 2024-02-16T16:57:26 Z ind1v Sure Bet (CEOI17_sure) C++11
100 / 100
127 ms 8448 KB
#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 5;

int n;
long double a[N], b[N];
long double sa[N], sb[N];

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> a[i] >> b[i];
    sa[i] = a[i] - 1;
    sb[i] = b[i] - 1;
  }
  sort(sa + 1, sa + n + 1, greater<long double>());
  sort(sb + 1, sb + n + 1, greater<long double>());
  long double lo = 0.0F, hi = 1e8;
  for (int ite = 1; ite <= 100; ite++) {
    long double mid = (lo + hi) * 0.5F;
    bool f = false;
    long double a = 0, b = 0;
    for (int x = 0, y = 0; x <= n; x++) {
      while (y + 1 <= n && a - (y + 1) >= mid) {
        y++;
        b += sb[y];
      }
      f |= (a - y >= mid && b - x >= mid);
      a += sa[x + 1];
    }
    if (f) {
      lo = mid;
    } else {
      hi = mid;
    }
  }
  cout << fixed << setprecision(4) << lo << '\n';
  return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 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 4444 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 4444 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 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 4444 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 4444 KB Output is correct
17 Correct 127 ms 6484 KB Output is correct
18 Correct 117 ms 8276 KB Output is correct
19 Correct 113 ms 8076 KB Output is correct
20 Correct 108 ms 8072 KB Output is correct
21 Correct 119 ms 8448 KB Output is correct
22 Correct 107 ms 7912 KB Output is correct
23 Correct 109 ms 7936 KB Output is correct
24 Correct 113 ms 8016 KB Output is correct
25 Correct 105 ms 8068 KB Output is correct
26 Correct 117 ms 8440 KB Output is correct