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Cod sursa(job #880561)
#include<fstream>
using namespace std;
int a[21][250001],i,j,n,m,x,y;
int main()
{
ifstream f("stramosi.in");
ofstream g("stramosi.out");
f >> n >> m;
for (i=1;i<=n;i++)
f >> a[0][i];
for (j=1;j<=17;j++)
for (i=1;i<=n;i++)
a[j][i]=a[j-1][a[j-1][i]];
for (i=1;i<=m;i++)
{
f >> x >> y;
for (j=0;y>0;j++)
{
if ((y & (1 << j))>0)
{
x=a[j][x];
y-=1 << j;
}
}
g << x << "\n";
}
return 0;
}