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#include <cstdio>
#include <vector>
using namespace std;
int stra[250001][20];
vector <int> gr[250001];
void dfs(int vf)
{
int p2=0,nod=stra[vf][0],i;
while(stra[nod][p2])
{
stra[vf][p2+1]=stra[nod][p2];
nod=stra[nod][p2];
p2++;
}
for(i=0;i<gr[vf].size();i++)
dfs(gr[vf][i]);
}
int cauta(int x, int p)
{
int st,dr,mij,ps;
if(p>(1<<20))
return 0;
while(x)
{
st=0;dr=20;
while((dr-st)>1)
{
mij=(st+dr)/2;
ps=1<<mij;
if(ps==p)
return stra[x][mij];
if(ps<p)
st=mij;
else
dr=mij;
}
if((1<<st)==p)
return stra[x][st];
if((1<<dr)==p)
return stra[x][dr];
p-=(1<<st);
x=stra[x][st];
}
return 0;
}
int main()
{
int n,m;
int i;
int x,p;
freopen("stramosi.in","r",stdin);
scanf("%d %d\n",&n,&m);
for(i=1;i<=n;i++)
{
scanf("%d ",&stra[i][0]);
gr[stra[i][0]].push_back(i);
}
dfs(0);
freopen("stramosi.out","w",stdout);
for(i=0;i<m;i++)
{
scanf("%d %d\n",&x,&p);
printf("%d\n",cauta(x,p));
}
fclose(stdin);
fclose(stdout);
return 0;
}