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int main() {
    return 0;
}

test

Problem	Tried	AC	Difficulty
P1000 A+B Problem	22	2	9

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
P1 【例2.1】Hello World	7	2	10
P2 【例2.2】你好世界	2	0	10

Section 1. 最初的最初 - A+B Problem