Cod sursa(job #302966)
Utilizator | Dan H Alexandru danalex97 | Data | 9 aprilie 2009 14:02:02 |
---|---|---|---|
Problema | Pairs | Scor | 0 |
Compilator | fpc | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
program perechi;
var n,i,j,c:longint;
a:array[1..1000000]of integer;
f,g:text;
function cmmdc(a,b:longint):longint;
var r:longint;
begin
while b<>0 do
begin
r:=a mod b;
a:=b;
b:=r;
end;
cmmdc:=a;
end;
begin
assign(f,'pairs.in');
reset(f);
assign(g,'pairs.out');
rewrite(g);
readln(f,n);
for i:=1 to n do readln(f,a[i]);
for i:=1 to n-1 do
for j:=i+1 to n do
if cmmdc(a[i],a[j])=1 then inc(c);
write(g,c);
close(f);
close(g);
end.