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Cod sursa(job #493673)
program cautbin;
const MAX =100011;
type date=0..MAX;
var f,g:text; i,j,n,m,q,p,r:date; v:array[0..MAX] of longint; x:longint;
procedure cb(st,dr:date);
var m:date;
begin
m:=st+(dr-st) div 2;
If v[m]=x then r:=m
else
If st=dr then
begin
r:=m;
p:=1;
exit;
end;
If v[m]<x then cb(m+1,dr);
If v[m]>x then cb(st,m);
end;
begin
Assign(f,'cautbin.in'); Reset(f);
Assign(g,'cautbin.out');Rewrite(g);
Readln(f,n);
For i:=1 to n do Read(f,v[i]);
Readln(f);
Readln(f,m);
For j:=1 to m do
begin
Readln(f,q,x);
p:=0;
cb(1,n);
case q of
0: If p=1 then Writeln(g,-1)
else
begin
i:=r;
While (i+1<=n)and(v[i+1]=x) do inc(i);
Writeln(g,i);
end;
1: begin
i:=r;
While (i+1<=n)and(v[i+1]<=x) do inc(i);
Writeln(g,i);
end;
2: begin
i:=r;
While (i-1>=1)and(v[i-1]>=x) do dec(i);
Writeln(g,i);
end;
end;
end;
Close(f); Close(g);
end.