static int cntWays ( int arr [ ] , int n ) {
  if ( n == 1 ) {
    return 0 ;
  }
  int tot_sum = 0 , sum = 0 , ans = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    tot_sum += arr [ i ] ;
  }
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    sum += arr [ i ] ;
    if ( sum == tot_sum / 2 ) {
      ans ++ ;
    }
  }
  return ans ;
}

static int cntWays ( int arr [ ] , int n ) { if ( n == 1 ) { return 0 ; } int tot_sum = 0 , sum = 0 , ans = 0 ; for ( int i = 0 ; i < n ; i ++ ) { tot_sum += arr [ i ] ; } for ( int i = 0 ; i < n - 1 ; i ++ ) { sum += arr [ i ] ; if ( sum == tot_sum / 2 ) { ans ++ ; } } return ans ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (expression_statement (update_expression (identifier))))))) (return_statement (identifier))))