Submission #599035

#	Time	Username	Problem	Language	Result	Execution time	Memory
599035		alirezasamimi100	Cave (IOI13_cave)	C++17	100 / 100	968 ms	468 KiB

cave

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

void exploreCave(int n) {
    int a[n],s[n],d[n];
    memset(d,-1,sizeof d);
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            if(d[j]==-1) a[j]=0;
            else a[j]=s[j];
        }
        int x;
        if(tryCombination(a)!=i) x=0;
        else x=1;
        int l=0,r=n;
        while(r-l>1){
            int m=(l+r)>>1;
            for(int j=0; j<m; j++){
                if(d[j]==-1) a[j]=1-x;
                else a[j]=s[j];
            }
            for(int j=m; j<n; j++){
                if(d[j]==-1) a[j]=x;
                else a[j]=s[j];
            }
            if(tryCombination(a)==i) r=m;
            else l=m;
        }
        s[l]=x;
        d[l]=i;
    }
    answer(s,d);
}

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