import sys
import math
input = sys.stdin.readline

k = int(input())
N = [tuple(map(int, input().split())) for _ in range(k)]
lgN = sum(math.log(p) * e for p, e in N)
P = N[-1][0]
lg = 0.0
err = math.inf
R = -1
for i in range(P // 2):
    lg += math.log(P - i) - math.log(i + 1)
    if err > abs(lg - lgN):
        err = abs(lg - lgN)
        R = i + 1

for p, e in N:
    def f(x):
        ans = 0
        while True:
            x //= p
            if x == 0:
                return ans
            ans += x
    if e != f(P) - f(P - R) - f(R):
        exit(print(-1, -1))

print(P, R)