Submission #844645

#	Time	Username	Problem	Language	Result	Execution time	Memory
844645		MilosMilutinovic	Exam (eJOI20_exam)	C++14	0 / 100	1071 ms	1060 KiB

exam

/**
 *    author:  wxhtzdy
 *    created: 05.09.2023 17:26:06
**/
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }  
  vector<int> b(n);
  for (int i = 0; i < n; i++) {
    cin >> b[i];
  }
  vector<int> dp(n);
  for (int r = 0; r < n; r++) {
    map<int, int> cnt;  
    int mx = a[r];
    for (int l = r; l >= 0; l--) {
      mx = max(mx, a[l]);
      cnt[b[l]] += 1;
      dp[r] = max(dp[r], (l == 0 ? 0 : dp[l - 1]) + cnt[mx]);
    }
  }
  cout << dp[n - 1] << '\n';
  return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22