n = int(input())

dp = [0]*1000002#定义差量数组，比10^6大2
max_i = 0#最大右下标
for _ in range(n):#初始化差量数组
    a, b = map(int,input().split())
    dp[a] += 1
    dp[b+1] -= 1
    max_i = max(max_i,b)

a = [0]*(max_i+1)#浇水次数数组
cur = 0#当前浇水次数
for i in range(max_i+1):#初始化胶水次数数组
    cur += dp[i]
    a[i] += cur

print(max(a))