Cod sursa(job #284650)
Utilizator | Data | 21 martie 2009 21:05:46 | |
---|---|---|---|
Problema | Trapez | Scor | 10 |
Compilator | fpc | Status | done |
Runda | Arhiva de probleme | Marime | 0.47 kb |
var f,g:text;
a,b:array[0..1001] of longint;
c:array[-361..361] of longint;
numar,i,md,j,n:longint;
begin
assign(f,'trapez.in');reset(f);
assign(g,'trapez.out');rewrite(g);
read(f,n);
for i:=1 to n do read(f,a[i],b[i]);
for i:=1 to n do
for j:=1 to n do
if i<>j then
if b[i]<>b[j] then begin
md:=(a[j]-a[i])div(b[j]-b[i]);
inc(c[md]);
end;
for i:=-361 to 361 do
if c[i]<>0 then inc(numar);
writeln(g,numar);
close(f);
close(g);
end.