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Cod sursa(job #187930)
type mult=1..250000;
matr=array[0..18,0..250000] of mult;
var f,g:text;
j,i,n,m,st,vl,a,b,ct:longint;
s : matr;
begin
assign(f,'stramosi.in');
reset(f);
assign(g,'stramosi.out');
rewrite(g);
readln(f,n,m);
for i:=1 to n do
begin
read(f,s[0,i]);
end;
st:=1;
while st<=n do
begin
st:=st shl 1;
inc(ct);
end;
dec(ct);
for i:=1 to ct do
for j:=1 to n do
s[i,j]:=s[i-1,s[i-1,j]];
for i:=1 to m do
begin
readln(f,a,b);
while b>0 do
begin
ct:=0;
while (1 shl ct) <= b do
inc(ct);
dec(ct);
b:=b-(1 shl ct);
a:=s[ct,a];
end;
writeln(g,a);
end;
close(f);
close(g);
end.