Submission #2521195

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Source Code Expand

S = input()

C = {"2":0,"5":0}

isok=True
max_con = 0
con = 0
back = ""
for s in S:
    C[s]+=1
    if C["5"]>C["2"]:
        isok=False
        break
    if s==back:
        con += 1
    else:
        if con > max_con: max_con = con
        con = 1
    back = s
    
if C["5"]!=C["2"]:
    isok = False

if isok:
    print(max_con)
else:
    print(-1)

Submission Info

Judge Result