TempStr = input()
TempNum = TempStr.split(' ')

n = int(TempNum[0])
x = int(TempNum[1])
ans = 0

for i in range(1,n+1):
    Temp = i
    while(Temp>0):
        if (Temp%10==x):
            ans+=1
        Temp//=10

print(ans)

麻烦各位了！