Python3 第一题过55% 第二题以为是连续三个数之和，只AC了9🙁 第一题代码： while True:     try:         carA = []         carB = []         n, m = map(int, input().split())         tmp = [i+1 for i in range(n)]         for i in range(m):             a, b = map(int, input().split())             if a in tmp:                 carA.append(a)                 tmp.remove(a)             if b in tmp:                 carB.append(b)                 tmp.remove(b)         while tmp:             if len(carA) < len(carB):                 carA.append(tmp.pop())             elif len(carA) > len(carB):                 carB.append(tmp.pop())             elif len(tmp) > 1:                 while len(carA) == len(carB):                     if len(tmp) == 1:                         break                     carA.append(tmp.pop())                     carB.append(tmp.pop())             elif len(tmp) == 1:                 break         print(len(carA )+len(carB))     except:         break