Compute First and Follow sets for each nonterminal in the grammar as follows.

$1$ Prog $$ Dcls Stmts $

$2$ Dcls $$ Dcl Dcls

$3|$

$4Dcl$ floatdcl id

$5|$ intdcl id

$6$ Stmts $$ Stmt Stmts

$7|$

$8$ Stmt $$ id assign Val ExprTail

$9|$ print id

$10$ ExprTail $$ plus Val ExprTail

$11|$ minus Val ExprTail

$12|$

$13$Val$$ id

$14|$ num