Задание 27 #07

N = int(input()) 
a = [0]*100 
for i in range(N): 
    d, k = map(int, input().split()) 
    a[k % d] += 1 
if a[0] = N: 
    print(0) 
else: 
    res = 1 
for i in range(2, 100): 
    if a[i] >= a[res]: 
        res = i print(res)