Submission #463809

#	Time	Username	Problem	Language	Result	Execution time	Memory
463809		AdamGS	Exam (eJOI20_exam)	C++14	0 / 100	1081 ms	30160 KiB

exam

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=5007;
map<int,int>mp;
int a[LIM], b[LIM], ile[LIM][LIM], dp[LIM];
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n;
	cin >> n;
	rep(i, n) cin >> a[i];
	rep(i, n) cin >> b[i];
	rep(i, n) {
		mp.clear();
		int ma=0;
		for(int j=i; j<n; ++j) {
			++mp[b[j]];
			ma=max(ma, a[j]);
			ile[i][j]=mp[ma];
		}
	}
	rep(i, n) {
		rep(j, i+1) {
			if(j) {
				dp[i]=max(dp[i], dp[j-1]+ile[j][i]);
			} else {
				dp[i]=max(dp[i], ile[j][i]);
			}
		}
	}
	cout << dp[n-1] << '\n';
}

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