Submission #805253

#	Time	Username	Problem	Language	Result	Execution time	Memory
805253		ma_moutahid	Cave (IOI13_cave)	C++17	0 / 100	363 ms	680 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
using ll =long long;
ll LINF=1000000000000000000;
int INF=1000000000;
#define pi pair<int,int>
#define pl pair<ll,ll>
#define endl '\n'
#define vi vector<int>
#define vii vector<vector<int>>
#define vl vector<ll>
#define vll vector<vector<ll>>
//#define int ll
using namespace std;

vi correct;
vi location;
int n;
void sett(int *v,int l,int r,int pos){
    for(int i=0;i<l;i++){
        v[i]=!pos;
    }
    for(int i=r+1;i<n;i++)v[i]=!pos;
    for(int i=l;i<=r;i++)v[i]=pos;
}

void exploreCave(int N) {
    correct.resize(N,-1);
    n=N;
    int combination[N];
    for(int i=0;i<N;i++)combination[i]=0;
    int found=0;
    int cave=0;
    location.resize(N,-1);
    int t;
    t=tryCombination(combination);
    for(int i=0;i<t;i++)correct[i]=0;
    correct[t]=1;
    while (1){
        int l=0,r=N-1;
        while(l!=r){
            int m=(l+r)/2;
            sett(combination,m,r,correct[cave]);
            t=tryCombination(combination);
            if(t==-1)return;
            if(t>cave)l=m;
            else r=m-1;
        }
        location[cave]=l;
        for(int i=cave;i<t;i++)correct[i]=combination[i];
        correct[t]=!combination[t];
        cave++;
    }
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:32:9: warning: unused variable 'found' [-Wunused-variable]
   32 |     int found=0;
      |         ^~~~~

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