Submission #985390

#	Time	Username	Problem	Language	Result	Execution time	Memory
985390		user736482	Cave (IOI13_cave)	C++17	100 / 100	579 ms	792 KiB

cave

#include<bits/stdc++.h>
#include "cave.h"
using namespace std;
bool fixed_[5000];
int match[5000],result[5000],openstate,ak;
void change(int a, int b, bool c){
    for(int i=a;i<=b;i++){
        if(!fixed_[i])
            result[i]= c;
    }
}

void exploreCave(int n){
    for(int i=0;i<n;i++){
        int pocz=0;
        int kon=n-1;
        change(pocz,kon,1);
        ak=tryCombination(result);
        if(ak==i)
            openstate=0;
        else
            openstate=1;
        while(pocz<kon){
            int sr=(pocz+kon)/2;
            change(0,sr,openstate);
            change(sr+1,n-1,!openstate);
            ak=tryCombination(result);
            if(ak==i)
                pocz=sr+1;
            else
                kon=sr;
        }
        result[pocz]=openstate;
        match[pocz]=i;
        fixed_[pocz]=1;
    }
    answer(result,match);
}

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