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Cod sursa(job #607239)
#include<stdio.h>
#define N 250001
long n,m,i,x,y,v[N],p[19][N],j;
int main()
{freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
scanf("%ld%ld",&n,&m);
p[0][0]=0;
for(i=1;i<=n;i++)
scanf("%ld",&v[i]),p[0][i]=v[i];
for(i=1;i<=18;i++)
for(j=1;j<=n;j++)
p[i][j]=v[p[i-1][j]];
while(m--)
{scanf("%ld%ld",&x,&y);
printf("%ld\n",p[y-1][x]);}
return 0;}