oj.uz

Submission #866906

# Submission time Handle Problem Language Result Execution time Memory
866906 2023-10-27T09:53:01 Z sleepntsheep Sure Bet (CEOI17_sure) C++17
60 / 100
 845 ms 10068 KB 
#include <cstdio>
#include <iomanip>
#include <cstring>
#include <cassert>
#include <string>
#include <deque>
#include <vector>
#include <map>
#include <queue>
#include <algorithm>
#include <iostream>
#include <utility>
using namespace std;
using ll = long long;
using ld = long double;
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false)

#define N 200005
#define ALL(x) x.begin(), x.end()

int n;
ld a[N], b[N];

int ok(ld x)
{
    for (int take = 0; take <= 2*n; ++take)
    {
        int l = max(0,n-take), r = n-1, L=-1, R=-1;
        while (l <= r)
        {
            int y = (l+r)/2;
            if (a[y] - take >= x) l=y+1, L=y;
            else r=y-1;
        }
        if (L==-1) continue;
        R = n-take+(n-L);
        if (R < n && b[R] - take >= x) return 1;
    }
    return 0;
}

int main()
{
    ShinLena;
    cin >> n;
    for (int i = 0; i < n; ++i) cin >> a[i] >> b[i];
    sort(a, a+n), sort(b, b+n);
    for (int i = n; i--;) a[i] += a[i+1], b[i] += b[i+1];

    ld l = 0, r = 1e9, iter=100;
    for (; --iter;)
    {
        ld y = (l+r)/2;
        if (ok(y)) l = y;
        else r = y;
    }
    cout << fixed << setprecision(4) << l;

    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 5 ms 2396 KB Output is correct
13 Correct 4 ms 2392 KB Output is correct
14 Correct 7 ms 2544 KB Output is correct
15 Correct 5 ms 2396 KB Output is correct
16 Correct 5 ms 2396 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2516 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 5 ms 2396 KB Output is correct
13 Correct 4 ms 2392 KB Output is correct
14 Correct 7 ms 2544 KB Output is correct
15 Correct 5 ms 2396 KB Output is correct
16 Correct 5 ms 2396 KB Output is correct
17 Correct 554 ms 5004 KB Output is correct
18 Correct 664 ms 5248 KB Output is correct
19 Correct 844 ms 5200 KB Output is correct
20 Correct 744 ms 5200 KB Output is correct
21 Correct 626 ms 5152 KB Output is correct
22 Correct 549 ms 5148 KB Output is correct
23 Correct 593 ms 5152 KB Output is correct
24 Correct 845 ms 5152 KB Output is correct
25 Correct 741 ms 4992 KB Output is correct
26 Runtime error 122 ms 10068 KB Execution killed with signal 11
27 Halted 0 ms 0 KB -