Submission #410845

#	Time	Username	Problem	Language	Result	Execution time	Memory
410845		AlexRex0	Cave (IOI13_cave)	C++14	100 / 100	456 ms	496 KiB

cave

#include "cave.h"
#include<bits/stdc++.h>
using namespace std;

bool visitado[5002];
int posiciones[5002];
int S[5002];

int prueba(int ini, int n){
    for(int i = 0; i < n; ++i){
        if(!visitado[i]){
            S[i] = 0;
        }
    }
    if(tryCombination(S) != ini){
        return 1;
    }
    return 2;
}

void bs(int tipo, int busco, int fin){
    int medio, ini = 0, res = -1;
    fin--;
    for(int i = 0; i <= fin; ++i){
        if(!visitado[i]){
            if(tipo == 2){
                S[i] = 1;
            }else{
                S[i] = 0;
            }
        }
    }
    while(ini < fin){
        medio = (ini + fin) / 2;
        for(int i = medio + 1; i <= fin; ++i){
            if(!visitado[i]){
                if(tipo == 1){
                    S[i] = 1;
                }else{
                    S[i] = 0;
                }
            }
        }
        if(tryCombination(S) != busco){
            fin = medio;
        }else{
            for(int i = medio + 1; i <= fin; ++i){
                if(!visitado[i]){
                    if(tipo == 1){
                        S[i] = 0;
                    }else{
                        S[i] = 1;
                    }
                }
            }
            ini = medio + 1;
        }
    }
    visitado[ini] = true;
    if(tipo == 1){
        S[ini] = 0;
    }else{
        S[ini] = 1;
    }
    posiciones[ini] = busco;
}

void exploreCave(int N) {
    for(int i = 0; i < N; ++i){
        int aux = prueba(i, N);
        bs(aux, i, N);
    }
    answer(S, posiciones);
}

Compilation message (stderr)

cave.cpp: In function 'void bs(int, int, int)':
cave.cpp:22:25: warning: unused variable 'res' [-Wunused-variable]
   22 |     int medio, ini = 0, res = -1;
      |                         ^~~

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