# https://www.globalsino.com/ICs/
# Extract least frequency element

from collections import defaultdict
  
theList = [10, 30, 50, 30, 5, 2, 50, 10, 30, 50]
  
print("The list is:")
print(str(theList))
print("\n")

res = defaultdict(int)
for i in theList:
    res[i] += 1 
min_occ = 9999

for i in res:
    print(min_occ)
    if min_occ > res[i]:
        min_occ = res[i]
        Least_freq = i
  
# printing result
print("The least frequent element is: ", Least_freq)
print(Least_freq + 2)