Submission #29934

#	Time	Username	Problem	Language	Result	Execution time	Memory
29934		aybala	Cave (IOI13_cave)	C++11	0 / 100	362 ms	544 KiB

cave

#include "cave.h"

#include<bits/stdc++.h>
#define fori(a,b,c) for(int a=b; a<c; a++)
#define ford(a,b,c) for(int a=b; a>=c; a--)
#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define fi first
#define se second
using namespace std;

int n;

int sw[5000];

int used[5000];

pii b[8900];
//pii a[8900];

int s[5000],d[5000];

void exploreCave(int N) {
	n=N;
	
	int lg=0;
	
	while((1<<lg) < n){
		lg++;
	}
	
	cout << lg;
	
	int nn=(1<<lg);
	
	fori(i,0,n){
		int las=0;
		int x=0;
		fori(j,0,lg+1){
			fori(k,las,las+(nn/(1<<j))+x){
				if(k>=n)
					break;
				if(!used[k]){
					sw[k]=(b[i].se+1)%2;
				}
				else{
					sw[k]=s[k];
				}
			}
			if(las>=n){
				continue;
			}
			int trc=tryCombination(sw);
			
			
			if(n==1){
				if(trc!=i){
					b[i].se=1;
				}
				d[i]=i;
				s[i]=b[i].se;
			}
			
			if(j==lg){
				if(trc!=i){
					used[las+1]=1;
					b[i].fi=las+1;
					d[las+1]=i;
					s[las+1]=b[i].se;
				}
				else{
					used[las]=1;
					b[i].fi=las;
					d[las]=i;
					s[las]=b[i].se;
				}
				break;
			}
			
			if(trc!=i && j==0){
				b[i].se = 1;
				continue;
			}
			
			if(trc==i && j==0){
				fori(k,las,las+(nn/(1<<j))+x){
					if(k>=n)
						break;
					if(!used[k]){
						sw[k]=0;
					}
					else{
						sw[k]=s[k];
					}
				}
				continue;
			}
			
			if(trc!=i && j!=0){
				if(las+(nn/(1<<(j)))+x <n)
					las=las+(nn/(1<<j))+x;
				continue;
			}
			
			if(trc==i && j!=0){
				fori(k,las,las+(nn/(1<<j))+x){
					if(k>=n)
						break;
					if(!used[k]){
						sw[k]=(b[i].se)%2;
					}
					else{
						sw[k]=s[k];
					}
				}
				continue;	
			}		
			
			
			
		}
	}	
	
	/*fori(i,0,n){
		s[i]=a[i].se;
		d[i]=a[i].fi;
	}*/
	
	/*fori(i,0,80000){
		tryCombination(sw);
	}*/
	answer(s,d);
	return ;
}

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