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Cod sursa(job #517135)
#include<fstream>
using namespace std;
int i,j,n,m,a[250001],q,p,k,aux,ok;
int main()
{
ifstream f("stramosi.in");
ofstream g("stramosi.out");
f>>n>>m;
for(i=1;i<=n;i++)
f>>a[i];
for(i=1;i<=m;i++)
{
f>>q>>p;
ok=1;
if(a[q]==0)
g<<0<<"\n";
else
{
k=a[q];
p--;
while(p)
{
k=a[k],p--;
if(k==0)
g<<0<<"\n",p=0,ok=0;
}
if(ok)
g<<k<<"\n";
}
}
return 0;
}