Submission #833414

#	Time	Username	Problem	Language	Result	Execution time	Memory
833414		vjudge1	Exam (eJOI20_exam)	C++17	0 / 100	1071 ms	596 KiB

exam

#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
int n;
int a[100005], b[100005];

int count(int l, int r){
	int mx = -1;
	for(int i=l; i<=r; i++) mx = max(mx, a[i]);
	int cnt = 0;
	for(int i=l; i<=r; i++){
		if(mx == b[i]) cnt++;
	}
	return cnt;
}

int f(int now){
	if(now <= 0) return 0;
	int ret = 0;
	for(int i=now; i>=1; i--){
		ret = max(ret, f(i-1)+count(i, now));
	}
	return ret;
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0);
	cin>>n;
	for(int i=1; i<=n; i++) cin>>a[i];
	for(int i=1; i<=n; i++) cin>>b[i];
	cout<<f(n)<<endl;
	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