Submission #1032013

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032013		juicy	Secret (JOI14_secret)	C++17	100 / 100	299 ms	8532 KiB

secret

#include <bits/stdc++.h>

#include "secret.h"

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

int n;
int a[1000], F[1000][1000];
bool vs[1000];

void dc(int l = 0, int r = n - 1) {
	if (l == r) {
		return;
	}
	int md = (l + r) / 2;
	dc(l, md);
	dc(md + 1, r);
	F[md][md] = a[md];
	for (int i = md - 1; i >= l; --i) {
		if (F[i][md] == -1) {
			F[i][md] = Secret(a[i], F[i + 1][md]);
		}
	}
	F[md + 1][md + 1] = a[md + 1];
	for (int i = md + 2; i <= r; ++i) {
		if (F[md + 1][i] == -1) {
			F[md + 1][i] = Secret(F[md + 1][i - 1], a[i]);
		}
	}
}

int Query(int L, int R) {
	for (int K = L; K < R; ++K) {
		if (F[L][K] != -1 && F[K + 1][R] != -1) {
			return Secret(F[L][K], F[K + 1][R]);
		}
	} 
	return a[L];
}

void Init(int _n, int *A) {
	n = _n;
	for (int i = 0; i < n; ++i) {
		a[i] = A[i];
	}
	memset(F, -1, sizeof(F));
	for (int i = 0; i < n; ++i) {
		F[i][i] = a[i];
	}
	dc();
}

• Subtask 1: 100 / 100