corrected binop ast

defs.tex

@@ -153,7 +153,7 @@
 \newcommand{\READ}{{\key{Call(Name('input\_int'),[])}}}
 \newcommand{\CREAD}{\key{input\_int()}}
 \newcommand{\NEG}[1]{{\key{UnaryOp(USub(),} #1\code{)}}}
-\newcommand{\ADD}[2]{{\key{BinOp}\LP \key{Add()}\key{,}#1\code{,}#2\code{)}}}
+\newcommand{\ADD}[2]{{\key{BinOp}\LP #1\code{,} \key{Add()}\key{,}#2\code{)}}}
 \newcommand{\SUB}[2]{{\key{BinOp}\LP \key{Sub()}\key{,}#1\code{,}#2\code{)}}}
 \newcommand{\PRINT}[1]{{\key{Expr}\LP\key{Call}\LP\key{Name}\LP\key{'print'}\RP\key{,}\LS#1\RS\RP\RP}}
 \newcommand{\EXPR}[1]{{\key{Expr}\LP #1\RP}}