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Submission #1019642

# Submission time Handle Problem Language Result Execution time Memory
1019642 2024-07-11T06:27:43 Z overwatch9 Sure Bet (CEOI17_sure) C++17
0 / 100
 1 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;
using dbl = double;
int main() {
    int n;
    cin >> n;
    vector <pair <dbl, dbl>> nums(n);
    for (int i = 0; i < n; i++)
        cin >> nums[i].first >> nums[i].second;
    vector <dbl> a(n), b(n);
    for (int i = 0; i < n; i++) {
        a[i] = nums[i].first;
        b[i] = nums[i].second;
    }
    sort(a.begin(), a.end());
    sort(b.begin(), b.end());
    dbl l = a.back(), r = b.back();
    dbl ans = max((dbl)0, min(l, r) - (dbl)2);
    for (int cnt = 4, pt = n-2; cnt <= n*2; cnt += 2, pt--) {
        if (r - l > 0.000000001)
            l += a[pt];
        else
            r += b[pt];
        ans = max(ans, min(l, r) - (cnt - 1));
        if (r - l > 0.0000000001)
            r += b[pt];
        else
            l += a[pt];
        ans = max(ans, min(l, r) - cnt);
    }
    cout << fixed << setprecision(4) << ans << '\n';
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -