s = input()
d = []
d_k = 0
temp = ""
flag = True
for _ in s:
    if _ in {'1','2','3','4','5','6','7','8','9','0'}:
        flag = True
        temp+=_
    else:
        flag = False
        if len(temp) > d_k:
            d_k=len(temp)
            d = [temp]
        elif len(temp) == d_k:
            d.append(temp)
        temp = ""
if len(temp) > d_k:
    d_k=len(temp)
    d = [temp]
elif len(temp) == d_k:
    d.append(temp)
print("%s,%s"%("".join(d),d_k))

模拟