Submission #678026

#	Time	Username	Problem	Language	Result	Execution time	Memory
678026		hello_there_123	Cave (IOI13_cave)	C++17	100 / 100	327 ms	468 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
int com[] = {1,1,1,1};
int bruh[] = {0,1,2,3};
int n;
/*
int tryCombination(int A[]){
	for(int i=0;i<n;i++) cout<<A[i]<<" ";
	cout<<"\n";
	for(int i=0;i<n;i++){
		if(A[i]!=com[bruh[i]]) {cout<<"i"<<i;return i;}
	}
	cout<<-1;
	return -1;
	return 1;
}
void answer(int A[],int B[]){
	cout<<"H"<<endl;
	for(int i=0;i<n;i++) cout<<A[i]<<" ";
	cout<<endl;
	for(int i=0;i<n;i++) cout<<B[i]<<" ";
}*/
void exploreCave(int N) {
	n = N;
	int comb[N+3];
	int link[N+3];
	memset(comb,-1,sizeof(comb));
	memset(link,-1,sizeof(link));
	for(int i=0;i<N;i++){
		int tr[N+3];
		for(int j=0;j<N;j++){
			tr[j] = comb[j];
		}
		for(int j=0;j<N;j++){
			if(tr[j] == -1) tr[j] = 0;
		}
		int cor;
      	int c = tryCombination(tr);
		if(c>i || c==-1) cor = 0;
		else cor = 1;
		int lo = 0;
		int hi = N-1;
		int ans = -1;
		while(lo<=hi){
			int X = (lo+hi)/2;
			for(int j=lo;j<=X;j++){
				if(comb[j] == -1) tr[j] = cor;
				else tr[j] = comb[j];
			}
			for(int j=X+1;j<N;j++){
				if(comb[j] == -1) tr[j] = 1-cor;
				else tr[j] = comb[j];
			}
			int hehehehaw = tryCombination(tr);
			if(hehehehaw>i ||hehehehaw == -1){
				hi = X-1;
				ans = X;
			}
			else lo = X+1;
		}
		link[ans] = i;
		comb[ans] = cor;
		
		
	}
  
 
 
 
    answer(comb, link);
}
/*
main(){
	exploreCave(4);
}
*/

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