Submission #833289

#	Time	Username	Problem	Language	Result	Execution time	Memory
833289		vjudge1	Exam (eJOI20_exam)	C++17	0 / 100	1074 ms	628 KiB

exam

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

int n;
int h[100005];
int t[100005];
int dp[100005];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;
    
    for (int i = 0; i < n; i++) {
        cin >> h[i];
    }
    
    for (int i = 0; i < n; i++) {
        cin >> t[i];
    }

    // subtask 3
    int ans = 0;
    dp[n] = 0;
    for (int i = n - 1; i >= 0; i--) {
        int maxx = 0, cnt = 0;
        map<int,int> mp;
        for (int j = i; j < n; j++) {
            mp[t[j]]++;
            dp[i] = max(dp[i], dp[j + 1] + mp[h[j]]);
        }
        dp[i] = max(dp[i], dp[i + 1]);
        ans = max(ans, dp[i]);
    }
    cout << ans << '\n';

    return 0;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:27:13: warning: unused variable 'maxx' [-Wunused-variable]
   27 |         int maxx = 0, cnt = 0;
      |             ^~~~
exam.cpp:27:23: warning: unused variable 'cnt' [-Wunused-variable]
   27 |         int maxx = 0, cnt = 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