Submission #833416

#	Time	Username	Problem	Language	Result	Execution time	Memory
833416		vjudge1	Exam (eJOI20_exam)	C++17	0 / 100	1 ms	1108 KiB

exam

#include<bits/stdc++.h>
#define int long long
#define For(i, n) for (int i = 0; i < n; i++)
using namespace std;

const int MAXN = 200;
int N, H[MAXN + 5], T[MAXN + 5], dp[MAXN + 5][MAXN + 5];

int f(int L, int R) {
	if (L > R) return 0;
	if (L == R) {
		if (H[L] == T[L]) return 1;
		else return 0;
	}
	// menjadikan semuanya max(H[l], H[l+1], .. , H[r])
	int maks = 0;
	for (int i = L; i <= R; i++) {
		maks = max(maks, H[i]);
	}
	int cnt = 0;
	for (int i = L; i <= R; i++) {
		if (T[i] == maks) cnt++;
	}
	int ans = cnt;
	for (int i = L; i <= R - 1; i++) {
		ans = max(ans, f(L, i) + f(i + 1, R));
	}
	return dp[L][R] = ans;
}

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	memset(dp, -1, sizeof dp);
	cin >> N;
	For (i, N) cin >> H[i];
	For (i, N) cin >> T[i];
	cout << f(0, N - 1) << endl;
}

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