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_plus = 0.0
lg_minus = 0.0
err = math.inf
r_ans = -1
for r in range(p // 2):
    lg_plus += math.log(p - r)
    lg_minus += math.log(r + 1)
    if err > abs(lg_minus + lgN - lg_plus):
        err = abs(lg_minus + lgN - lg_plus)
        r_ans = r + 1

if min(err, err / lgN) < 1e-8:
    print(p, r_ans)
else:
    print(-1, -1)