Cod sursa(job #442796)

Utilizator IAmASuperCerealVictor Andrei IAmASuperCereal Data 15 aprilie 2010 12:14:01
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.74 kb
#include<stdio.h>
#define input "stramosi.in"
#define output "stramosi.out"
int n,m,a[20][250001];
bool v[20];

void open()
{
	freopen(input,"r",stdin);
	freopen(output,"w",stdout);
}

void read()
{
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++)
		scanf("%d",&a[0][i]);
}


int solve(int p, int q)
{
	int s=p,i=31;
	while(i--)   
	{         
		if (q&(1<<i))            
			s=a[i][s];     
	}    
	return s;
}

void ask_me(int m)
{
	int p,q;
	while(m--)
	{
		scanf("%d%d",&p,&q);
		printf("%d\n",solve(p,q));
	}
}

void build()
{ 
	for (int i=1;1<<i<=n;i++)        
		for (int j=1;j<=n;j++)             
			a[i][j]=a[i-1][a[i-1][j]]; 
} 

int main()
{
	open();
	read();
	build();
	ask_me(m);
	return 0;
}