Cod sursa(job #250375)

Utilizator hysepCraciun Adrian hysep Data 30 ianuarie 2009 19:57:17
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.99 kb
#include <stdio.h>   
#define N 250250   
    
int n,m,q,p,a[18][N];   
void scr();   
int calcul(int p,int q)   
{   
    for(int j=0 ; p ; ++j,p>>=1)   
        if(p&1)   
            q=a[j][q];   
    return q;   
}   
void scr()   
{   
    for(int j=1;j<18;j++)   
    {   
        for(int i=1;i<=n;i++)   
        {   
            if(a[j-1][i])   
                a[j][i]=a[j-1][ a[j-1][i] ];   
        }   
    }   
}   
void citire()   
{   
    int i;   
       
    scanf("%d%d",&n,&m);   
    for(i=1;i<=n;i++)   
    {   
        scanf("%d",&a[0][i]);   
    }   
    scr();   
    for(i=1;i<=m;i++)   
    {   
        scanf("%d%d",&q,&p);   
        /*  
        for(int j=1;j<=p;j++)  
        {  
            q=v[q];  
        }  
        */   
        printf("%d\n",calcul(p,q));   
    }   
}   
  
int main()   
{   
    freopen("stramosi.in","r",stdin);   
    freopen("stramosi.out","w",stdout);   
    citire();   
  
    return 0;   
}