1086.pas

来自「平时acm训练时ac的源代码」· PAS 代码 · 共 35 行

var prost:array[1..16000] of longint;
    i,j,k,x,n:longint;flag:boolean;
procedure look(x:longint);
var i:longint;
begin
  i:=prost[k];
  repeat
    i:=i+2;
    flag:=true;
    for j:=1 to k do begin
      if i mod prost[j]=0 then begin
         flag:=false;
         break;
      end;
      if prost[j]*prost[j]>i then break;{This is very important}
    end;
    if flag then begin
       k:=k+1;
       prost[k]:=i;
    end;
  until k=x;
  writeln(prost[k]);
end;
begin
  prost[1]:=2;
  prost[2]:=3;
  prost[3]:=5;
  k:=3;
  read(n);
  for i:=1 to n do begin
	read(x);
        if x>k then look(x)
	       else writeln(prost[x]);
        end;
end.