var a,b, c, V: real;
begin
write('vvedite dlini storon ');
readln(a,b,c);
V:=a*b*c;
write('V = ',V);
readln;
end.
var a,b, c, V: real;
begin
write('vvedite dlini storon ');
readln(a,b,c);
V:=a*b*c;
write('V = ',V);
readln;
end.