标签:inline 情况 wap amp 时间 turn 未来 code pre
typedef long long ll;
const int maxn = 400050;
struct lct {
int ch[maxn][2], fa[maxn], w[maxn];
bool col[maxn], rev[maxn];
ll lans[maxn], rans[maxn], ans[maxn], tt[maxn], tt2[maxn], w2[maxn];
inline void Rev(const int& x) {
if(x) {
rev[x] ^= 1;
swap(ch[x][0], ch[x][1]);
swap(lans[x], rans[x]);
}
}
inline bool isroot(int x) {
return ch[fa[x]][0] != x && ch[fa[x]][1] != x;
}
inline void pushdown(const int& x) {
if(!x) return;
if(!isroot(x)) pushdown(fa[x]);
if(rev[x]) {
Rev(ch[x][0]); Rev(ch[x][1]);
rev[x] = 0;
}
}
inline void maintain(const int& x) {
if(!x) return;
w2[x] = w2[ch[x][0]] + w2[ch[x][1]] + w[x];
tt[x] = ;
lans[x] = ;
rans[x] = ;
}
inline void rotate(int x) {
int f = fa[x], ff = fa[f], d = x == ch[f][1];
if(!isroot(f)) ch[ff][f==ch[ff][1]] = x;
fa[x] = ff;
ch[f][d] = ch[x][d^1];
if(ch[x][d^1]) fa[ch[x][d^1]] = ch[f][d];
ch[x][d] = f; fa[f] = x;
maintain(f);
}
inline void splay(int x) {
pushdown(x);
for(int f = fa[x], ff = fa[f]; !isroot(x); rotate(x), f = fa[x], ff = fa[f])
if(!isroot(y)) rotate((x==ch[f][1])==(f==ch[ff][1])?f:x);
maintain(x);
}
inline void access(int x) {
int son = 0;
while(x) {
splay(x);
ch[x][1] = son;
maintain(x);
son = x; x = fa[x];
}
}
inline void mroot(int x) {
access(x); splay(x);
Rev(x);
}
inline void linkto(int u, int v) {
mroot(x); mroot(v);
fa[u] = v;
maintain(v);
}
inline void cutfrom(int u, int v) {
mroot(v); access(u); splay(u);
int root = ch[v][0];
ch[root][0] = fa[root] = ch[v][0] = fa[root] = 0;
maintain(v);
}
“自信可改变未来。”
是谁在夏令营说的说的来着?
进队=做大家都会的题+暴力全部打满
boj kt 基本没有这样的情况:因为时间不够没有想出做法。
标签:inline 情况 wap amp 时间 turn 未来 code pre
原文地址:https://www.cnblogs.com/utopia999/p/10486878.html