a = [int(elem) for elem in input().split()]
z = []
x = []
r = []
b = []
if a[0] == a[1] or a[0] == a[2] or a[1] == a[2]:
    for i in a:
        if i % 2 == 0:
            z.append(i)
        else:
            x.append(i)
    if len(z) == 1:
        print(x[0] * 110 + z[0])
    else:
        if len(x) == 1:
            if x[0] == max(a):
                print(max(a) * 100 + z[0] * 11)
            else:
                print(z[0] + 101 + 10 * x[0])
        else:
            if a[0] == a[1]:
                r.append(a[0])
            else:
                if a[0] == a[2]:
                    r.append(a[0])
                else:
                    if a[1] == a[2]:
                        r.append(a[1]
            for h in a:
                if r[0] > h:
                    print(r[0] * 110 + h)
                else:
                    print(h * 100 + r[0] * 11)
        for i in a:
            if i % 2 == 0:
                b.append(i)
        e = min(b)
        e1 = [e]
        c = []
        for i in a:
            if not (i in e1):
                c.append(i)
        q = max(c) * 100
        d = []
        q1 = [max(c)]
        for i in c:
            if not (i in q1):
                d.append(i)
        w = d[0] * 10
        print(q + w + e)