Submission #751904

#	Time	Username	Problem	Language	Result	Execution time	Memory
751904		Markomafko972	Secret (JOI14_secret)	C++14	0 / 100	474 ms	8328 KiB

secret

#include "secret.h"
#include <bits/stdc++.h>
using namespace std;
 
int n;
int a[1005];
int val[1005][1005];
 
void rek(int l, int r) {
	if (l >= r) return;
	
	int mid = (l+r)/2;
	for (int j = mid-1; j >= l; j--) {
		val[j][mid] = Secret(val[j+1][mid], a[j]);
	}
	for (int j = mid+2; j <= r; j++) {
		val[mid+1][j] = Secret(val[mid+1][j-1], a[j]);
	}
 
	rek(l, mid);
	rek(mid+1, r);
}
 
void Init(int N, int A[]) {
	n = N;
	memset(val, -1, sizeof val);
	for (int i = 0; i < n; i++) {
		a[i] = A[i];
		val[i][i] = a[i];
	}
	rek(0, n-1);
}
 
int Query(int l, int r) {
	if (val[l][r] != -1) return val[l][r];
	for (int i = l; i < r; i++) {
		if (val[l][i] != -1 && val[i+1][r] != -1) return Secret(val[l][i], val[i+1][r]);
	}
	return -1;
}

• Subtask 1: 0 / 100