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Cod sursa(job #770077)
#include<fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int n,nq,i,j,k;
int a[20][250001];
int q,x;
int main()
{f>>n>>nq;
for(i=1; i<=n; i++)
f>>a[0][i];
for(j=1; j<=n; j++)
for(i=1; i<=18; i++)
{if(a[i-1][a[i-1][j]])
a[i][j]=a[i-1][a[i-1][j]];
else
break;}
for(i=1; i<=nq; i++)
{f>>x>>q;
j=0;
while(q)
{if(q%2==1)
x=a[j][x];
j++;
q=q/2;}
g<<x<<endl;
}
return 0;
}