摘要：
Code cpp include include include define lson l,mid,rt '9') { if(ch == ' ') flag = 1; ch = getchar(); } while(ch = '0') { res = res 10 + ch '0'; ch = g 阅读全文
摘要：
```cpp include include include define lson l,mid,rt 1; build(lson); build(rson); update(rt); } void pushdown(int rt,int len) { if(add[rt] == 0) return 阅读全文