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直接装好mysql后在终端输入mysql -u root -p后会报错command not found，原因就是还没有添加环境变量。 cd ~ open .zshrc 添加： PATH="$PATH":/usr/local/mysql/bin source .zshrc 阅读全文
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#include <bits/stdc++.h> using namespace std; int n, k; void process() { int r; cin >> r; if(r == 1) return; for(int i = 1; i < n; i++) { cout << (i ^ 阅读全文
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AquaMoon had 𝑛n strings of length 𝑚m each. 𝑛n is an odd number. When AquaMoon was gone, Cirno tried to pair these 𝑛n strings together. After makin 阅读全文
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AquaMoon has 𝑛n friends. They stand in a row from left to right, and the 𝑖i-th friend from the left wears a T-shirt with a number 𝑎𝑖ai written on 阅读全文
摘要：
Cirno gave AquaMoon a chessboard of size 1×𝑛1×n. Its cells are numbered with integers from 11 to 𝑛n from left to right. In the beginning, some of th 阅读全文