oj.uz

Submission #201815

# Submission time Handle Problem Language Result Execution time Memory
201815 2020-02-12T05:43:37 Z abil Sure Bet (CEOI17_sure) C++14
60 / 100
 274 ms 35064 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

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 = 0.0, sum = 0.0;
  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 5 ms 376 KB Output is correct
2 Correct 5 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 5 ms 376 KB Output is correct
2 Correct 5 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 5 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 380 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 7 ms 376 KB Output is correct
14 Correct 7 ms 380 KB Output is correct
15 Correct 7 ms 376 KB Output is correct
16 Correct 7 ms 376 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 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 5 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 380 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 7 ms 376 KB Output is correct
14 Correct 7 ms 380 KB Output is correct
15 Correct 7 ms 376 KB Output is correct
16 Correct 7 ms 376 KB Output is correct
17 Correct 234 ms 4088 KB Output is correct
18 Correct 241 ms 4088 KB Output is correct
19 Correct 228 ms 4088 KB Output is correct
20 Correct 228 ms 4088 KB Output is correct
21 Correct 255 ms 4600 KB Output is correct
22 Correct 229 ms 4100 KB Output is correct
23 Runtime error 274 ms 35064 KB Execution killed with signal 11 (could be triggered by violating memory limits)
24 Halted 0 ms 0 KB -