Submission #833190

#	Time	Username	Problem	Language	Result	Execution time	Memory
833190		vjudge1	Exam (eJOI20_exam)	C++17	0 / 100	4 ms	468 KiB

exam

#include <bits/stdc++.h>
using namespace std;

const int MX = 2005;

int N;
int H[MX], T[MX], dp[MX];

int main() {
      cin.tie(0); ios_base::sync_with_stdio(0);
      
      cin >> N;
      for(int i = 1; i <= N; i++) cin >> H[i];
      for(int i = 1; i <= N; i++) cin >> T[i];

      for(int i = 1; i <= N; i++) {
            int mx = H[i];
            map<int,int> cnt;
            cnt[T[i]]++;
            for(int j = i - 1; j >= 0; j--) {
                  dp[i] = max(dp[i], dp[j] + cnt[mx]);
                  mx = max(mx, H[j]);
                  cnt[T[j]]++;
            }
            cnt.clear();
      }

      cout << dp[N] << '\n';

}

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