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Cod sursa(job #593348)
#include<stdio.h>
int n,m,i,j,poz,nr,x,a[250001][20],p,nl;
int main()
{
freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
scanf("%d%d",&n,&m);
for(i=1;i<=n;++i)
scanf("%d",&a[0][i]);
p=1;
while(p<=n)
{
p<<=1;
nl++;
}
//nl--;
for(i=1;i<=nl;++i)
for(j=1;j<=n;++j)
a[i][j]=a[i-1][a[i-1][j]];
for(i=1;i<=m;++i)
{
scanf("%d%d",&x,&nr);
poz=0;
while(nr!=0)
{
if ((nr&1)==1)
x=a[poz][x];
poz++;
nr>>=1;
}
printf("%d\n",x);
}
}