oj.uz

Submission #883276

# Submission time Handle Problem Language Result Execution time Memory
883276 2023-12-05T03:19:56 Z votranngocvy Sure Bet (CEOI17_sure) C++14
0 / 100
 3 ms 1368 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 5;
double a[N],b[N],sumA[N],sumB[N];

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    freopen("task.inp","r",stdin);
    freopen("task.out","w",stdout);
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
    sort(a + 1,a + n + 1,greater<double>());
    sort(b + 1,b + n + 1,greater<double>());
    sumA[0] = 0,sumB[0] = 0;
    for (int i = 1; i <= n; i++) {
        sumA[i] = sumA[i - 1] + a[i];
        sumB[i] = sumB[i - 1] + b[i];
    }
    int j = 1;
    double ans = 0;
    for (int i = 1; i <= n; i++) {
        while (j <= n && sumA[i] + sumB[j] - i - j <= sumA[i] + sumB[j - 1] - i - j - 1) j++;
        ans = max(ans,min(sumA[i],sumB[j]) - i - j);
    }
    cout << fixed << setprecision(4) << ans << "\n";
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("task.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sure.cpp:11:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     freopen("task.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 1368 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 1368 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 1368 KB Output isn't correct
2 Halted 0 ms 0 KB -