I need help with this problem to know why my code results in WA in some of the test cases…
Problem Link
from math import *
n = int(input())
t,a = map(int,input().split())
for i in range(n-1):
tr,ar = map(int,input().split())
k = max(ceil(t/tr),ceil(a/ar))
t = ktr
a = kar
print(t+a)