X=list(range(1,13))
Y=list(range(1,32))
count=0

for X in range(1,13):
    if X == 1 or 3 or 5 or 7 or 8 or 10 or 12:
        for Y in range(1,32):
            Y10=int(Y//10)
            Y1=Y%10
            if X == Y10+Y1: count+=1

    elif X == 4 or 6 or 9 or 11:
        for Y in range(1,31):
            Y10=int(Y//10)
            Y1=Y%10
            if X == Y10+Y1: count+=1

    else:
        for Y in range(1,29):
            Y10=int(Y//10)
            Y1=Y%10
            if X == Y10+Y1: count+=1

print(count)