if __name__ == '__main__':
a, b = input().split(":")
res = []
for m in range(2, 100):
hour, mins = 0, 0
flag1, flag2 = 1, 1
ok1, ok2 = 1, 1
mi = 0 # 次幂
for i in range(len(a)-1, -1, -1):
if 57 >= ord(a[i]) >= 48: # 使用ascii码判断是否为数字
if int(a[i]) >= m:
flag1 = 0
break
hour += int(a[i]) * m ** mi
elif ord(a[i]) >= 65: # 使用ascii判断是否为字母
if ord(a[i])-55 >= m:
flag1 = 0
break
hour += (ord(a[i])-55) * m ** mi
mi += 1
if hour >= 24:
ok1 = 0
mi = 0
if flag1 and ok1:
for i in range(len(b)-1, -1, -1):
if 57 >= ord(b[i]) >= 48: # 数字
if int(b[i]) >= m:
flag2 = 0
break
mins += int(b[i]) * m ** mi
elif ord(b[i]) >= 65: # 字母
if ord(b[i]) - 55 >= m:
flag2 = 0
break
mins += (ord(b[i]) - 55) * m ** mi
mi += 1
if mins >= 60:
ok2 = 0
if not ok1 or not ok2:
break
if flag1 and flag2 and ok2 and ok1:
res.append(m)
for r in res:
print(r) 差在哪一点
#笔试题目##顺丰科技##算法工程师#
