Submission #699276

#	Time	Username	Problem	Language	Result	Execution time	Memory
699276		mmmmaasss	Exam (eJOI20_exam)	C++14	0 / 100	398 ms	392448 KiB

exam

#include <bits/stdc++.h>

using namespace std;

#define ll long long

int main()
{
   int n;cin >> n;
   int rr = 0;
    vector<int> a(n + 1) , b(n + 1);
    for(int i = 1;i <= n;i ++){
        cin >> a[i];
    }
    for(int i = 1;i <= n;i ++){
        cin >> b[i];
    }
    vector<vector<ll>> dp(n + 1 , vector<ll>(n + 1)) , p(n + 1 , vector<ll>(n + 1));
    for(int i = 1;i <= n;i ++){
        int c = a[i] == b[i];
        dp[i][i] = c;
        for(int j = i - 1;j >= 1;j --){
            c += a[i] == b[j];
            p[j][i] = c;
        }
    }
    for(int i = 1;i <= n;i ++){
        for(int j = i - 1;j >= 1;j --){
            dp[1][i] = max(p[j][i] + dp[1][j],dp[1][i]);
        }
    }
    cout << dp[1][n] << endl;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:10:8: warning: unused variable 'rr' [-Wunused-variable]
   10 |    int rr = 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