Submission #856524

#	Time	Username	Problem	Language	Result	Execution time	Memory
856524		IS_Rushdi	Cave (IOI13_cave)	C++17	12 / 100	322 ms	600 KiB

cave

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



void exploreCave(int n) {
    int a[n],b[n];
    for(int i = 0; i < n; i++){
        a[i] = -1;
        b[i] = -1;
    }

    for(int i = 0; i < n; i++){
        int num = 0;
        for(int j = 0; j < n; j++){
            if(b[j] == -1) a[i] = 0;
        }
        int ask = tryCombination(a);
        if(ask == -1) ask = n+1;
        if(ask <= i) num = 1;
        int l = 1,r=n;
        int idx = -1;
        while(l <= r){
            int m = (l+r)/2;
            int cnt = 0;
            for(int j = 0; j < n; j++){
                if(b[j] == -1){
                    if(cnt >= m) a[j] = 1-num;
                    else{
                        a[j] = num;
                        idx = j;
                        cnt++;
                    }
                }
            }
            ask = tryCombination(a);
            if(ask == -1) ask = n+1;
            if(ask <= i) l = m+1;
            else{r = m-1;}
        }
        a[idx] = num;
        b[idx] = i;
    }
    answer(a,b);
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24