import sys

list_1 = [] 

for line in sys.stdin:
    a = line.split()
    list_1.append(a)

times = int(list_1[0][0])
i = 0
while i != times:
    sum = int(list_1[i + 1][0]) + int(list_1[i + 1][1])
    print(sum)
    i += 1