oj.uz

Submission #201820

# Submission time Handle Problem Language Result Execution time Memory
201820 2020-02-12T05:57:43 Z abil Sure Bet (CEOI17_sure) C++14
60 / 100
 424 ms 33328 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define all(s) s.begin(),s.end()
//#define int long long
#define double long double
using namespace std;

const int N = (1e6 + 12);
const int mod = (1e9 + 12);
const int inf = (1e9 + 12);

double a[N], b[N], pr[N];

bool cmp(double x, double y){
  return x >= y;
}

main()
{
  int n;
  scanf("%d", &n);
  for(int i = 1;i <= n; i++){
    cin >> a[i] >> b[i];
  }
  sort(a + 1,a + 1 + n, cmp);
  sort(b + 1,b + 1 + n, cmp);
  double ans = 0.00000000000, sum = 0.00000000000;
  pr[0] = 0.0;
  for(int j = 1;j <= n; j++){
    pr[j] = pr[j - 1] + b[j];
  }
  for(int i = 1;i <= n; i++){
    sum += a[i];
    int l = 1, r = n;
    while(r - l > 1){
      int mid = (r + l) >> 1;
      if(pr[mid] > sum){
        r = mid;
      }
      else{
        l = mid;
      }
    }
    for(int j = max(1, l - 100); j <= min(n, r + 100); j++){
      double x = j, y = i;
      ans = max(ans, min(pr[j] - x - y, sum - x - y));
    }
  }
  cout << fixed << setprecision(4) << ans;
}

Compilation message

sure.cpp:21:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
sure.cpp: In function 'int main()':
sure.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 8 ms 376 KB Output is correct
14 Correct 8 ms 376 KB Output is correct
15 Correct 8 ms 376 KB Output is correct
16 Correct 8 ms 376 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 8 ms 376 KB Output is correct
14 Correct 8 ms 376 KB Output is correct
15 Correct 8 ms 376 KB Output is correct
16 Correct 8 ms 376 KB Output is correct
17 Correct 364 ms 5240 KB Output is correct
18 Correct 367 ms 5116 KB Output is correct
19 Correct 346 ms 4984 KB Output is correct
20 Correct 356 ms 4984 KB Output is correct
21 Correct 371 ms 4984 KB Output is correct
22 Correct 367 ms 4984 KB Output is correct
23 Incorrect 424 ms 33328 KB Output isn't correct
24 Halted 0 ms 0 KB -