list31=[1,3,5,7,8,10,12]
list30=[4,6,9,11]
list28=[2]
c=0
for i in range(len(list31)):
    for j in range(31):
        if j<10:
            if list31[i]==j:
                c=c+1
        elif j>=10 and j<20:
            if list31[i]==1+(j-10):
                c=c+1
        elif j>=20 and j<30:
            if list31[i]==2+(j-20):
                c=c+1
        elif j>=30:
            if list31[i]==3+(j-30):
                c=c+1
        j=j+1 
    i=i+1
for i in range(len(list30)):
    for j in range(30):
        if j<10:
            if list30[i]==j:
                c=c+1
        elif j>=10 and j<20:
            if list30[i]==1+(j-10):
                c=c+1
        elif j>=20 and j<30:
            if list30[i]==2+(j-20):
                c=c+1
        elif j>=30:
            if list30[i]==3+(j-30):
                c=c+1
        j=j+1 
    i=i+1
    
for i in range(len(list28)):
    for j in range(28):
        if j<10:
            if list28[i]==j:
                c=c+1
        elif j>=10 and j<20:
            if list28[i]==1+(j-10):
                c=c+1
        elif j>=20 and j<30:
            if list28[i]==2+(j-20):
                c=c+1
        
        j=j+1 
    i=i+1   
    
print(c)