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Cod sursa(job #314587)
#include<stdio.h>
int mrx[20][250001];
void Constitution_Class_Starship_Construct(int n)
{
int i,j;
for(i=1;(1<<i)<=n;++i)
for(j=1;j<=n;++j)
mrx[i][j]=mrx[i-1][mrx[i-1][j]];
}
int main()
{
int a,b;
int i,n,m;
freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
scanf("%d%d",&n,&m);
for(i=1;i<=n;++i)
scanf("%d",&mrx[0][i]);
Constitution_Class_Starship_Construct(n);
while(m)
{
scanf("%d%d",&b,&a);
int lim=0;
while(a)
{
if(a&1)
b=mrx[lim][b];
++lim;
a>>=1;
}
printf("%d\n",b);
--m;
}
return 0;
}