Submission #441134

#	Time	Username	Problem	Language	Result	Execution time	Memory
441134		lLab_	Cave (IOI13_cave)	C++14	0 / 100	57 ms	65540 KiB

cave

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

vector<int> sol(vector<int> &A, int s, int e,int tar){
    if(s>=e) return A;
    int mid = (s+e)/2;

    vector<int> C = A;
    int n = A.size();
    int B[n];
    for(int i=0;i<n;++i){
        B[i] = A[i];
    }
    for(int i=mid;i<=e;++i){
        B[i] = (B[i]+1)%2;
        A[i] = B[i];
    }
    int res = tryCombination(B);
    if(res == -1 || (res > tar && tar != -1)){
        return A;
    }else if(res > tar && tar != -1){
        return sol(A,0,n-1,-1);
    }else{
        vector<int> D = sol(C,mid,e,tar);
        vector<int> E = sol(C,s,mid-1,tar);
        for(int i=0;i<n;++i){
            B[i] = D[i];
        }
        res = tryCombination(B);
        if(res == -1) return D;
        for(int i=0;i<n;++i){
            B[i] = E[i];
        }
        res = tryCombination(B);
        if(res == -1) return E;
        if(res<=tar) return D;
        else return E;
    }
}

void exploreCave(int N) {
    vector<int> A(N,0);
    A = sol(A,0,N-1,-1);
    int B[N];
    for(int i=0;i<N;++i) B[i] = A[i];
    int door[N];
    for(int i=0;i<N;++i){
        B[i] = (B[i]+1)%2;
        door[i] = tryCombination(B);
        B[i] = (B[i]+1)%2;
    }
    answer(B,door);
}

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