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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#227634 | #7610. Bus Lines | 275307894a | WA | 375ms | 35016kb | C++14 | 3.8kb | 2023-10-27 20:14:47 | 2023-10-27 20:14:47 |
Judging History
answer
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;using LL=__int128;
const int N=2e5+5,M=N*8+5,K=(1<<25)+5,mod=1e9+7,Mod=mod-1;const db eps=1e-9;const int INF=1e9+7;mt19937 rnd(time(0));
int n,x,y;
vector<int> S[N];
int fa[N],d[N],Sn[N],Si[N],Tp[N],Bg[N],Bh,En[N],Df[N];
void dfs1(int x,int La){
fa[x]=La;d[x]=d[La]+1;Si[x]=1;
for(int i:S[x]) if(i^La) dfs1(i,x),Si[x]+=Si[i],Si[Sn[x]]<Si[i]&&(Sn[x]=i);
}
void dfs2(int x,int La){
Df[Bg[x]=++Bh]=x;Tp[x]=La;if(Sn[x]) dfs2(Sn[x],La);
for(int i:S[x]) if(i^fa[x]&&i^Sn[x]) dfs2(i,i);En[x]=Bh;
}
vector<pair<int,int> > E;
int LCA(int x,int y){
E.clear();while(Tp[x]^Tp[y]) {
if(d[Tp[x]]<d[Tp[y]]) swap(x,y);
E.emplace_back(Bg[Tp[x]],Bg[x]);x=fa[Tp[x]];
}
if(d[x]>d[y]) swap(x,y);E.emplace_back(Bg[x],Bg[y]);return x;
}
ll f[N],g[N],w[N],ans[N];int up[N];
vector<pair<int,int> > D[N],Q[N];
namespace Tree{
#define ls v<<1
#define rs v<<1|1
int g[M],Ct;ll Sum[M],f[M];
void Up(int v){f[v]=(g[v]?Sum[v]:f[ls]+f[rs]);}
void PF(int v,int w){g[v]+=w;Up(v);}
void Add(int x,int y,int w,int l=1,int r=n,int v=1){
if(x<=l&&r<=y) return PF(v,w);int m=l+r>>1;
x<=m&&(Add(x,y,w,l,m,ls),0);y>m&&(Add(x,y,w,m+1,r,rs),0);Up(v);
}
void modify(int x,ll w,int l=1,int r=n,int v=1){
Sum[v]+=w;if(l==r) return;int m=l+r>>1;
x<=m?modify(x,w,l,m,ls):modify(x,w,m+1,r,rs);Up(v);
}
ll qry(int x,int y,int op=0,int l=1,int r=n,int v=1){
if(x>y) return 0;assert(g[v]>=0);
if(x<=l&&r<=y) return op?Sum[v]:f[v];int m=l+r>>1;
return (x<=m?qry(x,y,op|g[v],l,m,ls):0)+(y>m?qry(x,y,op|g[v],m+1,r,rs):0);
}
}
int MIN(int x,int y){return d[x]<d[y]?x:y;}
void ins(int x,int La,int w){
for(auto i:Q[x]) Tree::Add(i.fi,i.se,w);
for(auto i:D[x]) Tree::Add(i.fi,i.se,-2*w);
for(int i:S[x]) if(i^La) ins(i,x,w);
}
void dfs3(int x,int La){
for(int i:S[x]) if(i^La&&i^Sn[x]) dfs3(i,x),ins(i,x,-1);
if(Sn[x]) dfs3(Sn[x],x);
for(int i:S[x]) if(i^La&&i^Sn[x]) ins(i,x,1);
for(auto i:Q[x]) Tree::Add(i.fi,i.se,1);
for(auto i:D[x]) Tree::Add(i.fi,i.se,-2);
f[x]=En[x]-Bg[x]+1;
f[x]+=Tree::qry(Bg[x]+1,En[x]);
for(int i:S[x]) if(i^La) f[x]+=f[i];
w[x]=-f[x];for(int i:S[x]) if(i^La) w[x]+=f[i];
Tree::modify(Bg[x],w[x]);
for(int i:S[x]) if(i^La) up[x]=MIN(up[x],up[i]);
}
void dfs4(int x,int La){
for(int i:S[x]) if(i^La&&i^Sn[x]) dfs4(i,x),ins(i,x,-1);
if(Sn[x]) dfs4(Sn[x],x);
for(int i:S[x]) if(i^La&&i^Sn[x]) ins(i,x,1);
for(auto i:Q[x]) Tree::Add(i.fi,i.se,1);
for(auto i:D[x]) Tree::Add(i.fi,i.se,-2);
g[x]=n-(En[x]-Bg[x]+1);
g[x]+=Tree::f[1]-Tree::qry(Bg[x],En[x]);
// g[x]+=g[up[x]]+f[up[x]];
g[x]-=f[x];
// cerr<<x<<' '<<g[x]<<'\n';
}
void Make(int x,int La){g[x]+=g[up[x]]+f[up[x]];/*cerr<<g[x]<<'\n';*/if(!La) g[x]=0;for(int i:S[x]) if(i^La) Make(i,x);}
void Solve(){
int i,j;scanf("%d",&n);
for(i=1;i<n;i++) {
int x,y;scanf("%d%d",&x,&y);
S[x].eb(y);S[y].eb(x);
}
int Rt=1;
dfs1(Rt,0);dfs2(Rt,Rt);
int m;scanf("%d",&m);
iota(up+1,up+n+1,1);
while(m--){
int x,y;scanf("%d%d",&x,&y);
int Ls=LCA(x,y);up[x]=MIN(up[x],Ls);up[y]=MIN(up[y],Ls);
// for(auto i:E) for(int j=i.fi;j<=i.se;j++) A[x][j]++,A[y][j]++,A[Ls][j]-=2;
for(auto i:E) Q[x].eb(i),Q[y].eb(i),D[Ls].eb(i);
}
dfs3(Rt,0);ins(Rt,0,-1);dfs4(Rt,0);Make(Rt,0);
for(i=1;i<=n;i++){
ans[i]=g[i];for(int j:S[i]) if(j^fa[i]) ans[i]+=f[j];
printf("%lld ",ans[i]);
}
}
int main(){
int t=1;
// scanf("%d",&t);
while(t--) Solve();
cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 33096kb
input:
6 1 2 5 4 6 5 3 1 1 5 3 6 1 2 3 6 4
output:
6 9 9 10 7 7
result:
ok single line: '6 9 9 10 7 7 '
Test #2:
score: 0
Accepted
time: 3ms
memory: 30744kb
input:
2 1 2 1 1 2
output:
1 1
result:
ok single line: '1 1 '
Test #3:
score: -100
Wrong Answer
time: 375ms
memory: 35016kb
input:
16384 9137 490 3442 7239 1621 6904 13769 10250 14672 12572 14906 9437 6163 12339 15244 12016 3022 8670 3211 9106 11966 14817 15798 15876 6423 7394 894 7695 13877 1983 16342 15158 13574 15932 15125 10722 6989 15683 10335 8801 12301 4246 6166 3893 9347 12073 7897 12195 6510 3101 4526 15385 7017 7001 4...
output:
34401 34159 34148 34211 34128 34119 34181 43091 34201 34122 34163 34218 34177 34146 34174 34220 34165 34206 34089 50556 34140 34083 34220 34160 34149 34062 34194 34192 34410 34029 50362 34200 34071 34096 34368 34375 34154 50789 34200 34339 34211 34139 34139 34405 34223 34375 34159 34196 34120 34226 ...
result:
wrong answer 1st lines differ - expected: '34355 34048 34070 34152 33992 ...5 34333 33814 33294 34266 34337', found: '34401 34159 34148 34211 34128 ... 34385 34039 33862 34347 34391 '