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| #pragma GCC optimize(2) #include <iostream> #include <cstdio> #include <set> #include <vector> #include <climits> #define Pair pair<LL,LL> #define mp(x,y) make_pair(x,y) #define fi first #define se second using namespace std; typedef long long LL; const int MAXN=1e5+5; const int MAXM=1e6+5; struct Line { mutable LL k,b,p; Line() {} Line(LL k,LL b,LL p):k(k),b(b),p(p){} bool operator<(const Line &res) const {return k<res.k;} } anss[MAXN]; typedef multiset<Line>::iterator mlit; typedef vector<Pair>::iterator vcit; struct Data:multiset<Line> { inline LL fl(LL a,LL b) { if ((a^b)<0) return a/b-(a%b!=0); return a/b; } inline bool check(iterator x,iterator y) { if (y==end()) {x->p=INT_MAX;return false;} if (x->k == y->k) x->p=((x->b > y->b)?INT_MAX:INT_MIN); else x->p=fl(y->b - x->b, x->k - y->k); return x->p >= y->p; } inline void add(LL k,LL b) { mlit t=insert(Line(k,b,0)),y=t,x=t; y++; while (check(t,y)) erase(y++); if (t!=begin() && check(--x,t)) erase(t++),check(x,t); t=x; while (t!=begin() && (--x)->p >= t->p) erase(t++),check(x,t),t=x; } } ans; int head[MAXN],vet[MAXN*2],nxt[MAXN*2],num; Pair w[MAXN*2]; int sz[MAXN],mxs[MAXN],rt; bool vis[MAXN]; int n,m; inline int read() { char ch=getchar();int sum=0; while (ch>'9' || ch<'0') ch=getchar(); while (ch>='0' && ch<='9') sum=sum*10+ch-'0',ch=getchar(); return sum; } void print(LL x) { if (x>9) print(x/10); putchar(x%10+'0'); } inline void addedge(int x,int y,int k,int b) { num++;vet[num]=y;w[num]=mp(k,b);nxt[num]=head[x];head[x]=num; num++;vet[num]=x;w[num]=mp(k,b);nxt[num]=head[y];head[y]=num; } void getroot(int x,int fa,int tot) { sz[x]=1;mxs[x]=0; for (int e=head[x];e;e=nxt[e]) { int v=vet[e]; if (v==fa || vis[v]) continue; getroot(v,x,tot); sz[x]+=sz[v]; mxs[x]=max(mxs[x],sz[v]); } mxs[x]=max(mxs[x],tot-sz[x]); if (mxs[x]<mxs[rt]) rt=x; } void getpath(int x,int fa,LL k,LL b,Data &a) { int son=0; for (int e=head[x];e;e=nxt[e]) { int v=vet[e]; if (v==fa || vis[v]) continue; getpath(v,x,k+w[e].fi,b+w[e].se,a); son++; } if (!son) a.add(k,b); } inline void update(Data &a,Data &b) { vector<Pair> vec1,vec2; for (mlit it=a.begin();it!=a.end();++it) { if (!vec1.empty() && (it->k)==vec1[vec1.size()-1].fi) { vec1[vec1.size()-1].se=max(vec1[vec1.size()-1].se,it->b); } else vec1.push_back(mp(it->k,it->b)); } for (mlit it=b.begin();it!=b.end();++it) { if (!vec2.empty() && (it->k)==vec2[vec2.size()-1].fi) { vec2[vec2.size()-1].se=max(vec2[vec2.size()-1].se,it->b); } else vec2.push_back(mp(it->k,it->b)); } LL s1=0,s2=0; while (s1<vec1.size() && s2<vec2.size()) { ans.add(vec1[s1].fi+vec2[s2].fi,vec1[s1].se+vec2[s2].se); if (s1+1==vec1.size()) s2++; else if (s2+1==vec2.size()) s1++; else { double x1=-(vec1[s1+1].se-vec1[s1].se)/(double)(vec1[s1+1].fi-vec1[s1].fi); double x2=-(vec2[s2+1].se-vec2[s2].se)/(double)(vec2[s2+1].fi-vec2[s2].fi); if (x1<x2) s1++; else s2++; } } } Data merge(int l,int r,vector<Data> &q) { if (l==r) { Data tt; tt.add(0,0); update(tt,q[0]); return q[l]; } int mid=(l+r)>>1; Data t1=merge(l,mid,q),t2=merge(mid+1,r,q); if (t1.size()>t2.size()) swap(t1,t2); update(t1,t2); for (mlit it=t1.begin();it!=t1.end();++it) t2.add(it->k,it->b); return t2; } void solve(int x,int tot) { vis[x]=1; vector<Data> vec; Data blank;blank.add(0,0); for (int e=head[x];e;e=nxt[e]) { int v=vet[e]; if (vis[v]) continue; vec.push_back(blank); getpath(v,x,w[e].fi,w[e].se,vec[vec.size()-1]); } if (!vec.empty()) merge(0,vec.size()-1,vec); for (int e=head[x];e;e=nxt[e]) { int v=vet[e]; if (vis[v]) continue; rt=0; int tt=sz[v]; if (tt>sz[x]) tt=tot-sz[x]; getroot(v,x,tt); solve(rt,tt); } } int main() { n=read(),m=read(); ans.add(0,0); for (int i=1;i<n;i++) { int x=read(),y=read(),k=read(),b=read(); addedge(x,y,k,b); } mxs[0]=(n<<1);rt=0; getroot(1,0,n); solve(rt,n); int top=0; for (mlit it=ans.begin();it!=ans.end();++it) anss[++top]=(*it); for (LL i=0,j=1;i<m;i++) { while (anss[j].p<i) j++; print(anss[j].k*i+anss[j].b);putchar(' '); } return 0; }
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