import sys
import math

MOD = 998244353

def main():
    input = sys.stdin.read().split()
    ptr = 0
    N = int(input[ptr])
    ptr += 1
    
    P = 0
    Q = 1
    
    for _ in range(N):
        A = int(input[ptr])
        B = int(input[ptr + 1])
        ptr += 2
        
        new_num = P * B + A * Q
        new_den = Q * B
        
        g = math.gcd(new_num, new_den)
        if g == 0:
            g = 1
        
        P = new_num // g
        Q = new_den // g
    
    print(f"{P % MOD} {Q % MOD}")

if __name__ == "__main__":
    main()