static void dfs ( int a , int b , Vector < Integer > v [ ] , int vis [ ] ) {
  vis [ a ] = 1 ;
  c ++ ;
  for ( int i : v [ a ] ) {
    if ( vis [ i ] == 0 && i != b ) dfs ( i , b , v , vis ) ;
  }
}

static void dfs ( int a , int b , Vector < Integer > v [ ] , int vis [ ] ) { vis [ a ] = 1 ; c ++ ; for ( int i : v [ a ] ) { if ( vis [ i ] == 0 && i != b ) dfs ( i , b , v , vis ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (generic_type (type_identifier) (type_arguments (type_identifier))) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions))) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) (expression_statement (update_expression (identifier))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (array_access array: (identifier) index: (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (identifier)))) consequence: (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier) (identifier) (identifier)))))))))