private static void solve ( ) {
  int n = sc . nextInt ( ) ;
  int v = sc . nextInt ( ) ;
  int [ ] arr = new int [ 3001 ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) arr [ sc . nextInt ( ) ] += sc . nextInt ( ) ;
  int op = helper ( arr , v ) ;
  System . out . println ( op ) ;
}

private static void solve ( ) { int n = sc . nextInt ( ) ; int v = sc . nextInt ( ) ; int [ ] arr = new int [ 3001 ] ; for ( int i = 0 ; i < n ; i ++ ) arr [ sc . nextInt ( ) ] += sc . nextInt ( ) ; int op = helper ( arr , v ) ; System . out . println ( op ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (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: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))