摘要:
```cpp n = read(); for (int i = 1; i <= n; ++ i) { a[i] = read(); b[i] = a[i]; } stable_sort(b + 1, b + 1 + n); len = unique(b + 1, b + 1 + n) - (b + 阅读全文
摘要:
判断连通性 阅读全文
摘要:
P3605 [USACO17JAN]Promotion Counting P 阅读全文
摘要:
Luogu P4556 [Vani有约会]雨天的尾巴 /【模板】线段树合并 阅读全文