var x;
var y;
var z;
var a;
var b;
z := readint();
x := 1;
y := 2;
x := 3;
a := 7;
y := 3 + z;
if y then
  z := 8;
  x := 3;
else
  x := 3;
  z := 7 + z;
end
b := 7 + z;
z := 10;
writeint(b + 10);