import math

def main():
    MOD = 998244353
    N = int(input())
    fractions = []
    for _ in range(N):
        A, B = map(int, input().split())
        fractions.append((A, B))
    
    P = 0
    Q = 1
    for A, B in fractions:
        new_P = P * B + A * Q
        new_Q = Q * B
        g = math.gcd(new_P, new_Q)
        P = new_P // g
        Q = new_Q // g
    
    c_mod = P % MOD
    d_mod = Q % MOD
    print(c_mod, d_mod)

if __name__ == "__main__":
    main()