QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#734782 | #2644. Cats or Dogs | Shumomo | 0 | 1ms | 8220kb | C++14 | 3.8kb | 2024-11-11 15:04:53 | 2024-11-11 15:04:54 |
answer
#include "catdog.h"
#include<bits/stdc++.h>
using namespace std;
int sz[100009],mx[100009],h[100009],ver[200009],nxt[200009],tot,ff[100009],tp[100009],dfn[100009],ed[100009],n;
struct nd{
int x[2];
}g[100009];
struct node{
int x[4];
node operator +(const node &aa)const{
node cc;
cc.x[0]=min(min(x[0]+aa.x[2],x[1]+aa.x[0])+1,min(x[0]+aa.x[0],x[1]+aa.x[2]));
cc.x[1]=min(min(x[0]+aa.x[3],x[1]+aa.x[1])+1,min(x[0]+aa.x[1],x[1]+aa.x[3]));
cc.x[2]=min(min(x[2]+aa.x[2],x[3]+aa.x[0])+1,min(x[2]+aa.x[0],x[3]+aa.x[2]));
cc.x[3]=min(min(x[2]+aa.x[3],x[3]+aa.x[1])+1,min(x[2]+aa.x[1],x[3]+aa.x[3]));
cc.x[0]=min(cc.x[0],0x3f3f3f3f);
cc.x[1]=min(cc.x[1],0x3f3f3f3f);
cc.x[2]=min(cc.x[2],0x3f3f3f3f);
cc.x[3]=min(cc.x[3],0x3f3f3f3f);
return cc;
}
node operator +(const nd &aa)const{
node cc;
cc.x[1]=cc.x[2]=0x3f3f3f3f;
cc.x[0]=x[0]+min(aa.x[1]+1,aa.x[0]);
cc.x[3]=x[3]+min(aa.x[1],aa.x[0]+1);
return cc;
}
}f[100009],d[100009],val[400009];
void add(nd &cc,node aa){
cc.x[0]+=min(min(aa.x[2],aa.x[3])+1,min(aa.x[0],aa.x[1]));
cc.x[1]+=min(min(aa.x[2],aa.x[3]),min(aa.x[0],aa.x[1])+1);
}
void del(nd &cc,node aa){
cc.x[0]-=min(min(aa.x[2],aa.x[3])+1,min(aa.x[0],aa.x[1]));
cc.x[1]-=min(min(aa.x[2],aa.x[3]),min(aa.x[0],aa.x[1])+1);
}
void dfs1(int x,int fa){
sz[x]=1;
for(int i=h[x];i;i=nxt[i]){
if(ver[i]!=fa){
dfs1(ver[i],x);
sz[x]+=sz[ver[i]];
if(sz[ver[i]]>sz[mx[x]])mx[x]=ver[i];
}
}
}
void dfs2(int x,int fa,int tt){
tp[x]=tt;
ed[tt]=x;
ff[x]=fa;
dfn[x]=++tot;
if(mx[x])dfs2(mx[x],x,tt);
for(int i=h[x];i;i=nxt[i]){
if(ver[i]!=fa&&ver[i]!=mx[x]){
dfs2(ver[i],x,ver[i]);
}
}
}
void build(int rt,int l,int r){
if(l==r){
val[rt]=f[l];
return;
}
int mid=(l+r)>>1;
build(rt<<1,l,mid);
build(rt<<1|1,mid+1,r);
val[rt]=val[rt<<1]+val[rt<<1|1];
}
void update(int rt,int l,int r,int ll,node rr){
if(ll<l)return;
if(l==r){
val[rt]=rr;
return;
}
int mid=(l+r)>>1;
if(ll<=mid)update(rt<<1,l,mid,ll,rr);
else update(rt<<1|1,mid+1,r,ll,rr);
val[rt]=val[rt<<1]+val[rt<<1|1];
}
node query(int rt,int l,int r,int ll,int rr){
if(l>rr||r<ll){
node rtn;
rtn.x[0]=rtn.x[3]=0;
rtn.x[1]=rtn.x[2]=1;
return rtn;
}
if(l>=ll&&r<=rr){
return val[rt];
}
int mid=(l+r)>>1;
return query(rt<<1,l,mid,ll,rr)+query(rt<<1|1,mid+1,r,ll,rr);
}
void initialize(int N,vector<int> A,vector<int> B) {
n=N;
for(int i=0;i<n-1;i++){
tot++;
nxt[tot]=h[A[i]];
ver[tot]=B[i];
h[A[i]]=tot;
tot++;
nxt[tot]=h[B[i]];
ver[tot]=A[i];
h[B[i]]=tot;
}
for(int i=1;i<=n;i++){
f[i].x[0]=f[i].x[3]=0;
f[i].x[1]=f[i].x[2]=0x3f3f3f3f;
}
dfs1(1,0);
tot=0;
dfs2(1,0,1);
build(1,1,n);
}
int cat(int v){
f[v].x[0]=0;
f[v].x[1]=f[v].x[2]=f[v].x[3]=0x3f3f3f3f;
update(1,1,n,dfn[v],f[v]+g[v]);
while(v){
int u=tp[v];
int w=ed[u];
del(g[ff[u]],d[u]);
d[u]=query(1,1,n,dfn[u],dfn[w]);
add(g[ff[u]],d[u]);
update(1,1,n,dfn[ff[u]],f[ff[u]]+g[ff[u]]);
v=ff[u];
}
return min(min(d[1].x[0],d[1].x[1]),min(d[1].x[2],d[1].x[3]));
}
int dog(int v) {
f[v].x[0]=f[v].x[1]=f[v].x[2]=0x3f3f3f3f;
f[v].x[3]=0;
update(1,1,n,dfn[v],f[v]+g[v]);
while(v){
int u=tp[v];
int w=ed[u];
del(g[ff[u]],d[u]);
d[u]=query(1,1,n,dfn[u],dfn[w]);
add(g[ff[u]],d[u]);
update(1,1,n,dfn[ff[u]],f[ff[u]]+g[ff[u]]);
v=ff[u];
}
return min(min(d[1].x[0],d[1].x[1]),min(d[1].x[2],d[1].x[3]));
}
int neighbor(int v) {
f[v].x[0]=f[v].x[3]=0;
f[v].x[1]=f[v].x[2]=0x3f3f3f3f;
update(1,1,n,dfn[v],f[v]+g[v]);
while(v){
int u=tp[v];
int w=ed[u];
del(g[ff[u]],d[u]);
d[u]=query(1,1,n,dfn[u],dfn[w]);
add(g[ff[u]],d[u]);
update(1,1,n,dfn[ff[u]],f[ff[u]]+g[ff[u]]);
v=ff[u];
}
return min(min(d[1].x[0],d[1].x[1]),min(d[1].x[2],d[1].x[3]));
}
詳細信息
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 8
Accepted
time: 1ms
memory: 7876kb
input:
2 2 1 75 1 2 1 1 3 1 3 2 1 1 2 2 3 1 3 2 2 2 3 2 1 1 3 1 1 2 2 1 3 2 2 2 3 2 1 2 3 1 1 1 3 2 3 1 1 2 3 2 2 1 2 2 3 2 3 1 2 1 1 2 3 1 1 1 3 2 3 1 1 2 3 2 2 1 3 1 1 1 1 2 3 1 3 2 2 1 1 2 3 1 2 1 3 2 2 2 3 1 2 1 3 2 2 2 3 2 2 2 3 1 3 2 1 1 3 1 2 2 1 1 3 1 1 1 3 2 2 2 3 2 3 1 2 2 2 1 3 1 2 1 3 2 1 2 3 1...
output:
0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 1 0 1 0
result:
ok 75 lines
Test #2:
score: 8
Accepted
time: 1ms
memory: 7932kb
input:
9 5 3 4 9 5 4 4 1 5 7 7 6 4 8 2 3 32 2 9 2 5 1 1 2 2 1 4 1 3 3 3 2 3 3 1 2 7 3 4 1 4 3 2 3 7 1 6 3 4 2 7 2 8 3 7 3 9 3 5 1 4 3 6 2 1 1 7 3 4 3 8 1 2 3 2 3 3 3 7 1 9
output:
0 0 1 1 2 4 2 2 2 2 0 2 2 2 3 1 1 1 1 1 1 2 2 3 3 1 1 2 1 1 0 1
result:
ok 32 lines
Test #3:
score: 8
Accepted
time: 1ms
memory: 8220kb
input:
15 2 15 7 14 9 1 15 11 3 14 2 5 13 3 3 2 12 11 6 14 8 10 8 5 13 1 7 4 43 1 14 1 11 1 12 1 6 2 1 2 7 3 14 3 6 2 9 3 9 2 2 3 2 2 8 2 2 3 7 2 3 3 3 2 5 1 6 2 3 3 11 1 13 1 9 1 4 2 11 3 1 3 9 3 11 3 5 3 13 3 4 2 7 3 3 1 11 1 4 3 4 2 13 3 2 2 15 1 9 1 4 3 9 3 13
output:
0 0 0 0 1 2 2 1 1 1 1 1 1 1 1 1 1 1 2 2 2 4 5 5 5 3 3 3 3 2 2 2 2 2 3 2 2 2 2 3 4 3 3
result:
ok 43 lines
Test #4:
score: 0
Wrong Answer
time: 1ms
memory: 8216kb
input:
9 9 2 5 7 1 7 2 1 9 3 1 4 6 7 6 8 100 2 6 2 8 2 7 1 9 2 2 3 6 2 5 1 1 2 6 3 8 1 4 3 9 2 8 3 8 3 1 2 9 3 5 1 8 3 9 3 4 2 5 2 3 3 6 2 4 3 2 3 5 3 7 3 3 1 1 2 9 2 7 2 3 3 9 2 5 2 2 3 7 2 9 3 1 3 5 1 5 3 5 3 2 2 6 1 7 3 8 3 9 3 7 3 3 3 6 2 5 1 9 3 9 1 9 1 8 3 9 2 1 1 2 3 5 1 7 3 8 2 9 3 2 3 7 2 7 3 9 1 ...
output:
0 0 0 1 1 1 1 3 3 3 3 2 2 2 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 2 2 1 1 1 1 1 1 3 2 2 0 0 0 0 1 0 1 2 1 1 2 2 2 2 3 1 0 0 0 1 1 1 3 4 4 2 2 2 1 0 0 1 1 1 0 0 0 1 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0
result:
wrong answer 30th lines differ - expected: '2', found: '1'
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Skipped
Dependency #1:
0%