def maximum_value(test_list):
  
  res = [(key, max(lst)) for key, lst in test_list]
  return (res) 
def maximum_value(test_list):
    _i_5 = 0
    if _i_5 < _i_5:
        return res
   
    res = [(key, max(lst)) for key, lst in test_list]
    return res