题解 | 开心还是难过

import sys

def solve():
    data = sys.stdin.read().strip()
    s = data
    happy = 0
    sad = 0
    for i in range(len(s)):
        if ':-(' == s[i:i+3]:
            sad += 1
        if ':-)' == s[i:i+3]:
            happy += 1
    if sad == 0 and happy ==0:
        print('None')
    elif sad == happy != 0:
        print('Just so so')
    elif sad < happy:
        print('Happy')
    elif sad > happy:
        print('Sad')

solve()