Submission #375960

#	Time	Username	Problem	Language	Result	Execution time	Memory
375960		blackbori	Exam (eJOI20_exam)	C++14	65 / 100	172 ms	748 KiB

exam

#include <bits/stdc++.h>

using namespace std;

int A[5050], B[5050], C[5050], D[5050];
int n, a;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int i, j, m;

	cin >> n;
	for (i = 1; i <= n; i++) {
		cin >> A[i];
	}
	for (i = 1; i <= n; i++) {
		cin >> B[i];
	}

	for (i = 1; i <= n; i++) {
		for (j = i, m = A[i]; j <= n; j++) {
			if (m <= A[j]) C[j] = 1, m = A[j];
			else C[j] = 0;
		}
		for (j = i, m = A[i]; j >= 1; j--) {
			if (m <= A[j]) C[j] = 1, m = A[j];
			else C[j] = 0;
		}
		for (j = 1, m = 0; j <= n; j++) {
			m = max(m, D[j]);
			if (C[j]) D[j] = m + (B[i] == A[j]);
			else D[j] = 0;
			a = max(a, D[j]);
		}
	}

	cout << a << "\n";

	return 0;
}

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