Cod sursa(job #269730)
| Utilizator |  Andrei Alexandru THE_GAME |
Data | 3 martie 2009 12:17:11 |
|---|---|---|---|
| Problema | Factorial | Scor | 25 |
| Compilator | fpc | Status | done |
| Runda | Arhiva de probleme | Marime | 0.35 kb |
var d5,n,m,p:longint;
f,g:text;
begin
assign(f,'fact.in');
assign(g,'fact.out');
reset(f);
read(f,p);
m:=1;
while d5<p do begin
m:=m+1;
n:=m;
while n mod 5=0 do begin
n:=n div 5;
d5:=d5+1;
end;
end;
rewrite(g);
if d5=p then write(g,m)
else write(g,'-1');
close(f);
close(g);
end.