#coding: utf-8

def main():
    s = list(input())
    lists = rotate(s)
    print(max(lists))

def rotate(s):
    origin = s[:]
    lists = []
    lists.append(eval(''.join(s)))
    for i in range(len(s)-1):
        rote = origin
        rote = s[i:]+s[:i]
        try:
            if int(rote[0])+int(rote[-1]) :
                lists.append(eval(''.join(rote)))
        except:
            continue
    return lists

if __name__ == '__main__':
    main()