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Cod sursa(job #292269)
#include<stdio.h>
int a[18][250005];
int calcul(int p, int q)
{
int i=0;
while(p!=0)
{
if(p%2)
{
q=a[i][q];
}
++i;
p/=2;
}
return q;
}
void citire()
{
int i,j,p,q,n,m;
freopen("stramosi.in","r",stdin);
scanf("%d %d\n",&n,&m);
for(i=1;i<=n;++i)
scanf("%d ",&a[0][i]);
for(i=1;i<18;++i)
for(j=1;j<=n;++j)
a[i][j]=a[i-1][a[i-1][j]];
freopen("stramosi.out","w",stdout);
for(i=1;i<=m;++i)
{
scanf("%d %d\n", &q,&p);
printf("%d\n",calcul(p,q));
}
}
int main()
{
citire();
return 0;
}