CANHHUYEN PASCAL

var    c,b,d:longint;
    a:real;
begin
    assign(input,'canhhuyen.inp');reset(input);
    assign(output,'canthhuyen.out');rewrite(output);
    read(b,c);
    d:=b*b+c*c;
    a:=sqrt(d);
    write('Do dai canh huyen la ',a:0:2);
end.