제출 #385736

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
385736		Pichon5	동굴 (IOI13_cave)	C++17	0 / 100	41 ms	384 KiB

cave

#include "cave.h"
#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long int
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
//"\n"
using namespace std;
void exploreCave(int N) {
    /* ... */
    int n=N;
    int d[n];//d[i] es la puerta conectada con i switch
    int s[n]={0};//estos son los estados
    vector<bool>vis(n+1,false);//ya abri esta puerta
    for(int i=0;i<n;i++){
        int c=0;
        for(int l=0;l<n;l++){
            if(!vis[l])s[l]=0;
        }
        int x=tryCombination(s);
        if(x==i)c=1;
        d[i]=c;
        int pos;
        int b=0,e=n;
        while(b<=e){
            int mid=(b+e)/2;
            if(b==e)pos=b;
            for(int l=b;l<=mid;l++){
                if(!vis[l]){
                    s[l]=c;
                }
            }
            x=tryCombination(s);
            if(x==i){
                //significa que esta en la otra mitad
                b=mid+1;
            }else{
                //encontr
                e=mid-1;
            }
        }
        //pos es el switch que abrio la puerta
        vis[pos]=true;
        s[pos]=i;
    }
    answer(s,d);

}

컴파일 시 표준 에러 (stderr) 메시지

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:48:15: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
   48 |         s[pos]=i;
      |         ~~~~~~^~

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