s=[]
s1,s2,s3=map(int,input().split())
for i in range(1,s1+1):
    for j in range(1,s2+1):
        for k in range(1,s3+1):
            s.append(i+j+k)
o=[max(s, key=s.count)]
sorted(o)
print(o[0])