```
void add(int p) {
for (; p <= n; p += p & -p) c[p]++;
}
int sum(int p) {
int s = 0;
for (;p; p -= p & -p) s += c[p];
return s;
}
```
是啥意思啊,求教
by 团队官方账号 @ 2020-05-24 10:31:53
在线等,急
by 团队官方账号 @ 2020-05-24 10:32:46
树状数组基本操作啊
by Tony2 @ 2020-05-24 10:33:01
素质素质
by SamariumPhosphide @ 2020-05-24 10:33:58
@[Tony2](/user/171288) 他发的第二段啥意思啊 铜球
by yzyjh @ 2020-05-24 10:34:18
@[团队官方账号](/user/336744) 树状数组
by Lates @ 2020-05-24 10:34:58
@[yzyjh](/user/224960) 树状数组
by Lates @ 2020-05-24 10:35:17
板子啊……建议先学树状数组
by _5011_ @ 2020-05-24 10:35:40
树状数组,听不懂自己学去
by bovine__kebi @ 2020-05-24 10:42:05
那整个程序是啥意思呢,能不能私信教教蒟蒻
by yzyjh @ 2020-05-24 10:55:40