def degitsum(n):
    res=0
    for i in str(n):
        res+=int(i)
    return res
A=[0,31,28,31,30,31,30,31,31,30,31,30,31]
ans=0
for i in range(13):
    for j in range(A[i]+1):
        if degitsum(j)==i:
            ans+=1
print(ans)