program tamgiac;
uses crt;
var max, a, b, c: real;
begin
clrscr;
write('Nhap a, b, c: '); readln(a,b,c);
//Xac dinh 3 canh nhap vao co hop le khong
if (a < b + c) and (b < a + c) and (c < a + b) then begin
//Tim canh co do dai lon nhat
max := a;
if b > a then max := b; if c > a then max := c;
//Xac dinh loai tam giac bang Pytago
if max = b then begin
if b*b = c*c + a*a then writeln('Tam giac vuong')
else if b*b > c*c + a*a then writeln('Tam giac tu')
else writeln('Tam giac nhon') end
else if max = c then begin
if c*c = b*b + a*a then writeln('Tam giac vuong')
else if c*c > b*b + a*a then writeln('Tam giac tu')
else writeln('Tam giac nhon') end
else begin
if a*a = b*b + c*c then writeln('Tam giac vuong')
else if a*a > b*b + c*c then writeln('Tam giac tu')
else writeln('Tam giac nhon') end;
end
//Neu 3 canh khong hop le thi khong phai tam giac
else writeln('Khong phai tam giac');
readln;
end.