Submission #59255

#	Time	Username	Problem	Language	Result	Execution time	Memory
59255		aome	Cave (IOI13_cave)	C++14	100 / 100	1300 ms	648 KiB

cave

#include "cave.h"

#include <bits/stdc++.h>

using namespace std;

const int N = 5005;

int a[N];
int state1[N], pos1[N];
int state2[N], pos2[N];

void exploreCave(int n) {
    for (int i = 0; i < n; ++i) {
    	memset(a, -1, sizeof a);
    	for (int j = 0; j < i; ++j) {
    		a[pos1[j]] = state1[j];
    	}
    	for (int j = 0; j < n; ++j) {
    		if (a[j] == -1) a[j] = 0;
    	}
    	int rep = tryCombination(a);
    	if (rep != i) state1[i] = 0;
    	else state1[i] = 1;
    	for (int j = 0; (1 << j) < n; ++j) {
    		for (int k = 0; k < n; ++k) {
    			if (k >> j & 1) a[k] = state1[i];
    			else a[k] = state1[i] ^ 1;
    		}
    		for (int k = 0; k < i; ++k) {
    			a[pos1[k]] = state1[k];
    		}
    		rep = tryCombination(a);
    		if (rep != i) pos1[i] += 1 << j;
    	}
    	pos2[pos1[i]] = i;
    	state2[pos1[i]] = state1[i];
    }
    answer(state2, pos2);
}

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24