Cod sursa(job #700927)
| Utilizator |  Orgas Andrei orgasandrei |
Data | 1 martie 2012 12:36:28 |
|---|---|---|---|
| Problema | Ciurul lui Eratosthenes | Scor | 20 |
| Compilator | fpc | Status | done |
| Runda | Arhiva educationala | Marime | 0.3 kb |
program ciur;
var f,g:text;
t,k:integer; n,i,j:longint;
begin
assign(f,'ciur.in');reset(f);
assign(g,'ciur.out');rewrite(g);
read(f,n);
for i:=2 to n do begin
t:=0;
for j:=2 to i div 2 do
if i mod j =0 then begin t:=1; break;end;
if t=0 then k:=k+1;
end;
write(g,k);
close(f);
close(g);
end.
