a,b,c,d=map(int,input().split())
if a < b:  # a>b>c>d
    t = a;
    a = b;
    b = t;
if a < c:
    t = a;
    a = c;
    c = t;
if b < c:
    t = b;
    b = c;
    c = t;
if b < d:
    t = b;
    b = d;
    d = t;
if c < d:
    t = c;
    c = d;
    d = t;
if a-b!=2 or b-c!=2 or c-d!=2:
    print(a,b,c,d)
else: 
    if c-d==2:
        print('{}+2={}'.format(d,c))

    if b-c==2:
        print('{}+2={}'.format(c,b))

    if a-b==2:
        print('{}+2={}'.format(b,a))
/**************************************************************
	Problem: 1046
	User: admin
	Language: Python
	Result: Accepted
	Time:102 ms
	Memory:34480 kb
****************************************************************/