제출 #1071598

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1071598		TsotneSV	동굴 (IOI13_cave)	C++17	0 / 100	2 ms	1116 KiB

cave

#include <bits/stdc++.h>

#include "cave.h"
using namespace std;
/* /\_/\
  (= ._.)
  / >  \>
*/

#define pb push_back
#define ins insert
#define sz(x) ((long long) (x).size())
#define dbg(x) cerr<<#x<<" "<<x<<endl


int tryCombination(int S[]);
void answer(int S[], int D[]);

void exploreCave(int N) {
    
    int S[N],D[N]; memset(S,0,sizeof(N)); int curr = tryCombination(S);

    vector<int> idx; for(int i=0;i<N;i++) idx.pb(i);

    while(idx.size() and curr != N) {

        int l = 0,r = sz(idx)-1,id = sz(idx);

        while(l <= r) {

            int m = (l + r)/2;

            for(int i=0;i<=m;i++) S[idx[i]] = 1;
            
            int x = tryCombination(S);

            if(x != curr) {
                id = m;
                r = m - 1;
            }else {
                l = m + 1;
            }

            for(int i=0;i<=m;i++) S[idx[i]] = 0;

        }

        for(int i=0;i<=id;i++) S[idx[i]] = 1;

        int x = tryCombination(S);

        for(int i=0;i<=id;i++) S[idx[i]] = 0;

        if(x != -1 and x < curr) {
            D[idx[id]] = x;  
        } else {
            D[idx[id]] = curr + 1;
            S[idx[id]] = 1;
        } curr = x; idx.erase(idx.begin()+id);

    } 

    answer(S,D);

}

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