题解 | 讨厌鬼进货

n, x = map(int,input().split())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
fee = 0
for i in range(n):#寻找购买第i件商品的最低价
    fee += min(a[i],b[i])
if fee>x:
    print(x)
else:
    print(fee)