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Cod sursa(job #426172)
#include <fstream>
using namespace std;
int pred[250001];
int stramos(int x,int a)
{
if (a==0)
return 0;
switch (x)
{
case 0:return a;break;
case 1:return pred[a];break;
case 2:return pred[pred[a]];break;
case 3:return pred[pred[pred[a]]];break;
case 4:return pred[pred[pred[pred[a]]]];break;
case 5:return pred[pred[pred[pred[pred[a]]]]];break;
case 6:return pred[pred[pred[pred[pred[pred[a]]]]]];break;
default:return stramos(x-1,pred[a]);break;
}
}
int main()
{
int n,m,p,q,i;
ifstream in("stramosi.in");
ofstream out("stramosi.out");
in>>n>>m;
for (i=1;i<=n;i++)
in>>pred[i];
while (m--)
{
in>>q>>p;
out<<stramos(p,q)<<"\n";
}
return 0;
}