n = int(input())
liang = []
ls = []
sign = [0 for i in range(2000001)]
for i in range(n):
    ls.append(input().split())
for i in range(n):
    for j in range(1, int(ls[i][1]) + 1):
        k = int(float(ls[i][0]) * j)
        #k = 路灯号
        if sign[k] == 0:
            sign[k] = 1
        else:
            sign[k] = 0
for i in range(len(sign)):
    if sign[i] == 1:
        print(i)