Submission #1164226

#	Time	Username	Problem	Language	Result	Execution time	Memory
1164226		andrei_n	Exam (eJOI20_exam)	C++20	0 / 100	12 ms	328 KiB

exam

#include <bits/stdc++.h>

using namespace std;

int a[100005],b[100005];
int dp[5005][2];

signed main()
{
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    int n; cin>>n;
    for(int i=1; i<=n; ++i) cin>>a[i];
    for(int i=1; i<=n; ++i) cin>>b[i];
    for(int i=1; i<=n; ++i)
    {
        dp[i][0] = max(dp[i-1][0], dp[i-1][1]) + (a[i] == b[i]);
        int cnt = (a[i] == b[i]);
        for(int j=i-1; j>=0; --j)
        {
            dp[i][0] = max(dp[i][0], max(dp[j][0], dp[j][1]) + cnt);
            if(b[j] == a[i]) ++cnt;
        }
    }
    cout<<max(dp[n][0], dp[n][1]);
    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