Submission #1158337

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158337		vincenttrang	Cave (IOI13_cave)	C++20	100 / 100	389 ms	528 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
using namespace std;

void exploreCave(int N) {
    int trial[N];
    int determined[N];
    int switches[N];
    for (int i=0; i<N; i++) {
        determined[i] = -1;
        switches[i] = -1;
    }
    for (int i=0; i<N; i++) {
        for (int j=0; j<N; j++) {
            if (determined[j] == 1) {
                trial[j] = 1;
            } else {
                trial[j] = 0;
            }
        }
        bool res = (tryCombination(trial) == i);
        int bitres = 0;
        for (int k=0; k<13; k++) {
            for (int l=0; l<N; l++) {
                if (determined[l] != -1) {
                    trial[l] = determined[l];
                } else {
                    trial[l] = ((1 << k) & l) >> k;
                }
            }
            bool resk = (tryCombination(trial) == i);
            if (resk != res) {
                bitres ^= (1 << k);
            }
        }
        determined[bitres] = res ? 1 : 0;
        switches[bitres] = i;
    }
    answer(determined, switches);
}

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