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Problem	Tried	AC	Difficulty
P1 【例2.1】Hello World	460	182	5

This section cannot be challenged at present, so please complete the following sections first:

Section 1. 最初的最初 - A+B Problem (Completed 0%)

Problem	Tried	AC	Difficulty
P10 【例4.1】交换两个数的位置	312	136	4
P100 【例18.3】卡牌游戏	123	43	5

Section 1. 最初的最初 - A+B Problem