import sys
from math import gcd

MOD = 998244353

def main():
    input = sys.stdin.read().split()
    n = int(input[0])
    data = list(map(int, input[1:]))
    current_num = 0
    current_den = 1
    for i in range(n):
        a = data[2*i]
        b = data[2*i +1]
        new_num = current_num * b + current_den * a
        new_den = current_den * b
        g = gcd(new_num, new_den)
        current_num = new_num // g
        current_den = new_den // g
    print(current_num % MOD, current_den % MOD)

if __name__ == "__main__":
    main()