public static long combi ( int n , int r ) {
  return fac [ n ] * ( finv [ r ] * finv [ n - r ] % modAns ) % modAns ;
}

public static long combi ( int n , int r ) { return fac [ n ] * ( finv [ r ] * finv [ n - r ] % modAns ) % modAns ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (identifier)))) right: (identifier)))) right: (identifier)))))