# n = int(input('nhap n:'))
# sum = 0
# for i in range(n):
#     b = int(input('nhap so:'))
#     sum = sum + b
# print('tong do day: ',sum)


# m = int(input('nhap m:'))
# sum = 0
# for i in range(m):
#     c = int(input('nhap so:'))
#      sum = sum + c
# print('tong 


