Submission #148671

#	Time	Username	Problem	Language	Result	Execution time	Memory
148671		Cafe Maru (#200)	Bulb Game (FXCUP4_bulb)	C++17	36 / 100	1018 ms	8192 KiB

bulb

#include "bulb.h"

const int RED = -1;
const int BLUE = -2;

using vi = std::vector<int>;

int GetBulb(const vi& L, const vi& R, const vi& S){
    int cur = 0;
    while(1){
        if(S[cur]==0){
            if(L[cur]<0) return L[cur];
            cur = L[cur];
        }
        else if(S[cur]==1){
            if(R[cur]<0) return R[cur];
            cur = R[cur];
        }
    }
}

int FindWinner(int T, std::vector<int> L, std::vector<int> R){
    const int N = L.size();
    vi S(N);
    for(int i=0;i<N;i++){
        S[i] = 1-S[i];
        bool all_red = true;
        for(int j=0;j<N;j++){
            S[j] = 1-S[j];
            int res = GetBulb(L, R, S);
            if(res==BLUE) all_red = false;
            S[j] = 1-S[j];
        }
        if(all_red) return 1;
        S[i] = 1-S[i];
    }
    return 0;
}

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