Submission #440741

#	Time	Username	Problem	Language	Result	Execution time	Memory
440741		MrDeboo	Exam (eJOI20_exam)	C++17	0 / 100	21 ms	332 KiB

exam

#include <bits/stdc++.h>
#define int long long
#define mod 1000000007
#define endl '\n'
using namespace std;
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    pair<int,int>pr[n];
    for(int i=0;i<n;i++){
        cin>>pr[i].first;
    }
    for(int i=0;i<n;i++){
        cin>>pr[i].second;
    }
    int arr[n];
    for(int i=0;i<n;i++)arr[i]=0;
    for(int i=0;i<n;i++){
        if(i>0)arr[i]=arr[i-1];
        int temp=0;
        for(int w=i-1;w>=0;w--){
            if(pr[w].second==pr[i].first)temp++;
            if(temp+(w>0?arr[w-1]:0)>arr[i])arr[i]=temp+(w>0?arr[w-1]:0);
        }
        if(pr[i].first==pr[i].second)arr[i]++;
    }
    cout<<arr[n-1];
}

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