题解 | 讨厌鬼进货

n,x = map(int,input().split())
total = 0
a = list(map(int,input().split()))
b = list(map(int,input().split()))
for i in range(n):
    total += min(a[i],b[i])
if total<=x:
    print(total)
else:
    print(x)