Cod sursa(job #249867)
Utilizator | Andrei Pavel rendorzeg | Data | 29 ianuarie 2009 13:59:52 |
---|---|---|---|
Problema | Cifre | Scor | 0 |
Compilator | fpc | Status | done |
Runda | Arhiva de probleme | Marime | 0.55 kb |
var a,b,k,c,d,i,l,m,z:longint;
n:real;
f,g:text;
begin
assign(f,'cifre.in');
reset(f);
assign(g,'cifre.out');
rewrite(g);
read(f,a);
read(f,b);
read(f,k);
read(f,c);
m:=0;
for i:=a to b do begin
d:=i;
l:=0;
repeat
if d mod 10=c then l:=l+1;
d:=d div 10;
until (d=0) or (l=k);
if l=k then m:=m+1;
end;
z:=b-a+1;
n:=m/z;
write(g,n:4:4);
close(f);
close(g);
end.