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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 |
---|---|---|---|---|---|---|---|---|---|
#573986 | #9319. Bull Farm | qdsdsy | TL | 65ms | 23016kb | C++14 | 4.0kb | 2024-09-18 20:30:36 | 2024-09-18 20:30:36 |
Judging History
answer
#include<cstdio>
#include<queue>
#include<algorithm>
#include<vector>
#include<bitset>
using namespace std;
#define MAXN 2010
#define MAXQ 1000010
int n,l,q;
int t[MAXN][MAXN];
struct node{
int a,b,c,id;
friend bool operator < (node a,node b){
return a.c<b.c;
}
} op[MAXQ];
char ans[MAXQ];
struct edge{
int v,nxt;
} e1[MAXN*MAXN];
int head[MAXN],cnte=0;
void ad(int u,int v){
e1[++cnte].v=v;
e1[cnte].nxt=head[u];
head[u]=cnte;
}
vector <int> ve[MAXN],ed[MAXN];
int f[MAXN];
int find(int x){ return f[x]==x?x:f[x]=find(f[x]); }
void merge(int x,int y){
int fx=find(x),fy=find(y);
if(fx==fy) return;
if(ed[fx].size()<ed[fy].size()) swap(fx,fy);
for(int i=0;i<(int)ve[fy].size();i++)
ed[fx].push_back(ed[fy][i]);
ed[fx].push_back(fy);
f[fy]=fx;
ed[fy].clear();
}
int dfn[MAXN],low[MAXN],tot=0;
int sta[MAXN],top=0;
int bel[MAXN],cntb=0;
bool vis[MAXN];
void tarjan(int u){
dfn[u]=low[u]=++tot;
sta[++top]=u;
vis[u]=true;
for(int i=head[u];i;i=e1[i].nxt){
int v=e1[i].v;
if(!dfn[v]){
tarjan(v);
low[u]=min(low[u],low[v]);
}else if(vis[v]) low[u]=min(low[u],low[v]);
}
if(low[u]==dfn[u]){
int t;
++cntb;
do{
t=sta[top--];
vis[t]=false;
bel[t]=cntb;
}while(t!=u);
}
}
vector <int> e[MAXN];
bitset <MAXN> to[MAXN];
void dfs(int u){
vis[u]=true;
for(int i=0;i<(int)e[u].size();i++){
int v=e[u][i];
to[u]|=to[v];
if(vis[v]) continue;
dfs(v);
to[u]|=to[v];
}
}
char s[MAXN];
int typ[MAXN];
void solve(){
scanf("%d%d%d",&n,&l,&q);
cnte=0;
for(int i=1;i<=n;i++){
bel[i]=head[i]=0;
ed[i].clear();
ve[i].clear();
f[i]=i;
}
for(int i=1;i<=l;i++){
scanf("%s",s+1);
for(int j=1;j<=n;j++)
t[i][j]=(s[2*j-1]-'0')*50+(s[2*j]-'0');
}
for(int i=1;i<=q;i++){
scanf("%s",s+1);
op[i].a=(s[1]-'0')*50+(s[2]-'0');
op[i].b=(s[3]-'0')*50+(s[4]-'0');
op[i].c=(s[5]-'0')*50+(s[6]-'0');
op[i].id=i;
ans[i]=0;
}
sort(op+1,op+1+q);
int now=0;
for(int u=1;u<=n;u++)
to[u][u]=1;
for(int i=1;i<=q;i++){
int a=op[i].a,b=op[i].b,c=op[i].c,id=op[i].id;
if(c==0){
if(a==b)
ans[id]='1';
else ans[id]='0';
continue;
}
while(now<c){
now++;
typ[now]=0;
for(int j=1;j<=n;j++)
vis[j]=false;
for(int j=1;j<=n;j++){
if(!vis[t[now][j]]) vis[t[now][j]]=true;
else {
if(!typ[now]) typ[now]=t[now][j];
else typ[now]=-1;
}
}
if(typ[now]==-1) continue;
if(typ[now]){
int id1=0,id2=0,id3=0;
for(int j=1;j<=n;j++) vis[j]=false;
for(int j=1;j<=n;j++){
if(t[now][j]==typ[now])
if(!id1) id1=j;
else id2=j;
vis[t[now][j]]=true;
}
for(int j=1;j<=n;j++)
if(!vis[j]) id3=j;
ad(id1,id3);
ad(id2,id3);
ed[id1].push_back(id3);
ed[id2].push_back(id3);
}else {
for(int j=1;j<=n;j++)
vis[j]=false;
for(int j=1;j<=n;j++){
if(!vis[j]){
int nowj=j;
do{
vis[nowj]=true;
merge(nowj,j);
nowj=t[now][nowj];
} while(nowj!=j);
}
}
}
for(int i=1;i<=n;i++){
dfn[i]=low[i]=vis[i]=bel[i]=0;
e[i].clear();
}
cntb=tot=top=0;
for(int i=1;i<=n;i++)
if(!dfn[i]) tarjan(i);
for(int u=1;u<=n;u++){
if(u==find(u)){
for(int i=0;i<(int)ed[u].size();i++){
int v=ed[u][i];
if(bel[u]!=bel[find(v)])
e[bel[u]].push_back(bel[find(v)]);
}
}
}
for(int u=1;u<=cntb;u++)
for(int v=1;v<=cntb;v++)
to[u][v]=0;
for(int u=1;u<=cntb;u++){
to[u][u]=1;
vis[u]=false;
}
for(int u=1;u<=n;u++)
if(!vis[u]) dfs(u);
}
ans[id]=(int)to[bel[find(a)]][bel[find(b)]] + '0';
}
ans[q+1]=0;
printf("%s\n",ans+1);
}
int main()
{
int t;
scanf("%d",&t);
while(t--)
solve();
return 0;
}
/*
2
5 2 4
0305040201
0404040404
030300
020500
050102
020501
6 2 4
030603010601
010203060504
030202
060402
050602
060401
*/
/*
1
3 3 6
020202
030301
030201
020102
030203
010201
010303
020303
010202
*/
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 10132kb
input:
2 5 2 4 0305040201 0404040404 030300 020500 050102 020501 6 2 4 030603010601 010203060504 030202 060402 050602 060401
output:
1011 0100
result:
ok 2 lines
Test #2:
score: 0
Accepted
time: 1ms
memory: 8188kb
input:
1 3 3 6 020202 030301 030201 020102 030203 010201 010303 020303 010202
output:
010101
result:
ok single line: '010101'
Test #3:
score: 0
Accepted
time: 65ms
memory: 12004kb
input:
200 10 10 5000 01060:04020305080709 0103070:060204050908 09070503080401060:02 050308010204090:0607 03010502040607080:09 03080109020504060:07 06050:09040302080107 07080305010409060:02 030809010:0204060507 0:060908070201050304 060700 090:03 09080: 070405 010703 0:0100 080601 030600 070206 0:0:09 08040...
output:
011110001101101111111111111111111101111111110111011110110110111011010111111111111111111101111111111110111111110111111111111101111111111110111111111111111111110001100111111111111111111111111011101111111111111111111111111111111111111111011011110100111110111111110111111100111111101110111111111101111110...
result:
ok 200 lines
Test #4:
score: 0
Accepted
time: 64ms
memory: 23016kb
input:
1 2000 1 1000000 M=:]A@8UAY7W2JJ4KEHIA[HSCQ1ENSC`JXR;F3PJ:_@41P9Z=9HR8P<<:DUXRR9^WOQFL?NZP6S@=J0^WE32=6;\U0?88]Q_RNPUMT6YU<4<S]H?:7OCQYOT4YAV1^764ENWSDBED>M7A:BI>KSIR48JQ9B=N\5T3N4A2aF0@>3TI81<G7;YE>W`NMP<:IT4CI3D0=GZC3I\CLQJQBA9BDIS9SAM55KaVA<Z@D=>:Y?CQHUQ5U3a6UVI8OKX9_FAF^7=5M85;<0;8YPAM<7Z7PP7A=N...
output:
000101000101100010001000000010010110000001000001001100000000010000100001000000101100000000010000001000000001110000010110100000111100100000001000000000011001010001000001001000100000000100011001100110010000010000101100000011111000000010000101010010000000010101000001010111100000100000000000000101000100...
result:
ok single line: '000101000101100010001000000010...0101000101000000000010101001000'
Test #5:
score: -100
Time Limit Exceeded
input:
1 2000 2000 1000000 FVAaH7GRPO;_11Da5J18@3SMG==\G8E8S^6:M4L0JH>MN5IXT>2<7WJ3U8LVJS=;;3F13>0D0>VOIIU@EPHG6ABL6;K?T1PXDERLG07]5C9^GDKG<SBMIW;`4W8P3=469TIPKH0O34523_J5C2MJ17D25Z@=K8H@M>WK<CMK7EO]BPD7B6AW741J5YIHIa1:ERSG>L3N2^F3<4F`DLE@2AA5=8GZK6:192FB736[WMV7:^DA2C:<LK040VJBM3M]WXU50`407TR_?PLF@5VL7OSL...