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()))
sum = 0
for i in range(n):
    if a[i] >= b[i]:
        sum += b[i]
    else:
        sum += a[i]
if sum > x:
    print(x)
else:
    print(sum)