Submission #149743

#	Time	Username	Problem	Language	Result	Execution time	Memory
149743		test team (#200)	Bulb Game (FXCUP4_bulb)	C++17	0 / 100	2 ms	376 KiB

bulb

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bulb.h"
#include "bulb.h"
#include<bits/stdc++.h>
using namespace std;
int l[300100],r[300100];
bool exist[300100];
vector<int> wen,owe;
void dfs(int node)
{
    
    if(owe[node]==-1)
        r[node]=1;
    if(owe[node]==-2)
        r[node]=2;
    if(owe[node]>=0)
    {
        dfs(owe[node]);
        r[node]=l[owe[node]];
    }
    if(r[node]==1)
        exist[node]=true;
    if(wen[node]==-1)
        l[node]=1;
    if(wen[node]==-2)
        l[node]=2;
    if(wen[node]>=0)
    {
        dfs(wen[node]);
        l[node]=l[wen[node]];
        if(exist[node]==false&&exist[wen[node]])
            exist[node]=true;
    }
}
int FindWinner(int T, std::vector<int> L, std::vector<int> R){
	int N = L.size();
	for(int i=0;i<N;i++)
    {
        wen.push_back(L[i]);
        owe.push_back(R[i]);
    }
    dfs(0);
    if(l[0]==1)
        return 1;
    int node=0,s=0,p;
    while(r[node]==2)
    {
        s++;
        p++;
        if(owe[node]<0)
            return 0;
        if(exist[owe[node]]==false)
            return 0;
        if(r[owe[node]]==1)
            p++;
        if(wen[node]<0)
            break;
        node=wen[node];
    }
    int first=owe[node];
    if(r[node]==1)
    {
        while(first>=0)
        {
            s++;
            first=wen[first];
            if(r[first]==1)
                return 1;
        }
        if(s<N-1)
            return 1;
        return 0;
    }
    if(p==N)
        return 0;
    return 1;
}

Compilation message (stderr)

bulb.cpp: In function 'int FindWinner(int, std::vector<int>, std::vector<int>)':
bulb.cpp:51:10: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
         p++;
         ~^~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 25
• Subtask 3: 0 / 64