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题解 | H++

interesting problem >.< first we make the string in order like aabbbccc, to make that, we let ba->ab, ca->ac, cb->bc. then we unique it...

2023-08-22

2 362

Solution | Beginner Round 65 C

C This is a solution by std::set. if op=1op=1op=1, we use .earse() to remove it. if op=2op=2op=2, we can use this code to find its precursors: auto it...

2023-01-06

8 456

Solution | Beginner Round 65 B

B First, we should delete the Special characters\sf Special\ charactersSpecial characters in the string sss, then we use .find() to check if...

2023-01-06

3 332

Solution | Beginner Round 65 A

A A simple question. We can use a for loop to enumerate the number of basketballs we choose to buy, and then calculate the number of soccer balls we b...

2023-01-06

5 271