# MT 5 Q1
n = input()
k = int(input())
n1 = len(n)
if len(n) <= k:
    print(0)
    quit()

a = ''
i = 0
while i < (n1-1) and k > 0:
    if int(n[i]) > int(n[i+1]):
        i += 1
        k -= 1
        continue

    else:
        a += n[i]
        i += 1

a += n[i]
i += 1
if k > 0:
    a = a[:-k]

if i <= (n1-1):
    while i < n1:
        a += n[i]
        i += 1

print(int(a) % ((10**9)+7))

# MT 5 Q2
n = int(input())
m, res = 0, 0
x = int(input())
l = list(map(int, input().split()))

for i in range(n):
    l[i] = (l[i]-1)//x

for i in range(n):
    if l[i] >= m:
        m = l[i]
        res = i

print(res+1)

# MT 5 Q3
s = input()
l = []
for i in s:
    if i.isalpha():
        l.append(i)
l = l[::-1]
r = []
for i in s:
    if i.isalpha():
        r.append(l.pop(0))
    else:
        r.append(i)
print(r)