Submission #467542

#	Time	Username	Problem	Language	Result	Execution time	Memory
467542		lordlorinc	Cave (IOI13_cave)	C++17	100 / 100	397 ms	452 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"

using namespace std;

// int main(){
//     return 0;
// }

void exploreCave(int n) {
    
    int swiches[n], partners[n];
    bool founded[n];

    swiches[0] = 1;
    swiches[1] = 1;
    swiches[2] = 1;
    swiches[3] = 1;

    //cout << tryCombination(swiches) << " wdsvlkn" << endl;

    fill(founded, founded + n, false);
    fill(partners, partners + n, -1);

    for (int i = 0; i < n; i++) {
        int l = 0, r = n - 1;

        

        for (int j = 0; j < n; j++) {
            if (founded[j] == false) {
                swiches[j] = 0;
            }
        }
        //cout << tryCombination(swiches) << endl;

        int subThing = tryCombination(swiches);

        int status = subThing <= i && subThing != -1;
        //cout << status << endl;

        while (l != r){
            int mid = (l + r) / 2;
            for (int j = l; j <= r; j++) {
                if (founded[j] == true) continue;
                
                if (j <= mid){
                    swiches[j] = status;
                }
                else{
                    swiches[j] = 1 - status;
                }
            }

            //for (int i = 0; i < n; i++) cout << swiches[i] << " ";
            //cout << endl;

            int comb = tryCombination(swiches);

            //cout << comb << endl;

            if (comb <= i && comb != -1){
                l = mid + 1;
            }
            else r = mid;
        }

        //cout << l << endl;

        swiches[l] = status;

        //cout << endl;

        founded[l] = true;
        partners[l] = i;
    }

    answer(swiches, partners);

}

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