由案例手动模拟一下结果是怎么推出来的，然后再用代码实现即可

写法一：

s1,s2 = input().split()
a1,b1,c1 = map(int,s1.split('.'))
a2,b2,c2 = map(int,s2.split('.'))

Galleon = a1 + a2
Sickle = b1 + b2
Knut = c1 + c2

if Knut >= 29:
    Knut -=29
    Sickle += 1

if Sickle >= 17:
    Sickle -= 17
    Galleon += 1

print("{}.{}.{}".format(Galleon,Sickle,Knut))

写法二：

s1,s2 = input().split()
a1,b1,c1 = map(int,s1.split('.'))
a2,b2,c2 = map(int,s2.split('.'))

Galleon = a1 + a2
Sickle = b1 + b2
Knut = c1 + c2

Sickle += Knut // 29
Knut %= 29

Galleon += Sickle // 17
Sickle %= 17

print("{}.{}.{}".format(Galleon,Sickle,Knut))