static long combi ( int n , int k ) {
  return ( ( fact [ n ] * inv [ n - k ] ) % mod * inv [ k ] ) % mod ;
}

static long combi ( int n , int k ) { return ( ( fact [ n ] * inv [ n - k ] ) % mod * inv [ k ] ) % mod ; }
(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: (parenthesized_expression (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (identifier))))) right: (identifier)) right: (array_access array: (identifier) index: (identifier)))) right: (identifier)))))