1010

nums = []
nums[ : ] = input().split()
i = 1
while i <= len(nums) - 3:
    a = int(nums[i - 1])
    x = int(nums[i])
    if x != 0 and x != 1:
        print(a * x, x - 1, end = ' ')
    if x == 1:
        print(a * x, x - 1)
    i = i + 2