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Submission #753708

# Submission time Handle Problem Language Result Execution time Memory
753708 2023-06-05T18:06:19 Z emad234 Exam (eJOI20_exam) C++17
0 / 100
 1000 ms 1972 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int mxN = 2e6 + 1;
const int mod = 1e9 + 7;
int a[mxN],b[mxN];
bool tk[mxN];
int main()
{
  ios::sync_with_stdio(false);cin.tie(0); cout.tie(0);
  int n;
  cin >>n;
  priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>>q;
  for(int i = 0;i < n;i++) cin >>a[i];
  for(int i = 0;i < n;i++) {
    cin >>b[i];
    q.push({b[i],i});
  }
  int bf = 0;
  int l = n,r = n;
  int diff = 0;
  int ans = 0;
  while(q.size()){
    pair<int,int> u = q.top();
    // cout<<u.first<<' '<<u.second<<'\n';
    q.pop();
    for(int i = l;i <= r;i++){
      ans -= tk[i];
      tk[i] = 0;
      if(b[i] == bf){
        ans++;
        tk[i] = 1;
      }
    }
    // cout<<l<<' '<<r<<' '<<ans<<'\n';
    l = n;r = n;
    diff = 0;
    int num = 0;
    int mx = 0;
    for(int i = u.second;i < n;i++){
      mx = max(mx,a[i]);
      num += (b[i] == u.first);
      num -= tk[i];
      if(mx == u.first){
        if(num >= diff){
          r = i;
          l = u.second;
          diff = num;
        }
      }
    }
    num = 0;
    mx = 0;
    for(int i = u.second;i >= 0;i--){
      mx = max(mx,a[i]);
      num += (b[i] == u.first);
      num -= tk[i];
      if(mx == u.first){
        if(num >= diff){
          r = u.second;
          l = i;
          diff = num;
        }
      }
    }
    bf = u.first;
  }
  for(int i = l;i <= r;i++){
    ans -= tk[i];
    tk[i] = 0;
    if(b[i] == bf){
      ans++;
      tk[i] = 1;
    }
  }
  // cout<<l<<' '<<r<<' '<<ans<<'\n';

  cout<<ans;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 904 ms 852 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 492 KB Output is correct
2 Execution timed out 1083 ms 1972 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -