QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#567451 | #9319. Bull Farm | yangzc | WA | 536ms | 40656kb | C++20 | 4.2kb | 2024-09-16 12:03:03 | 2024-09-16 12:03:03 |
Judging History
answer
#include<bits/stdc++.h>
#define maxn 2010
#define int long long
using namespace std;
int read(){
char c1,c2;
cin>>c1>>c2;
int x=(c1-48)*50+(c2-48);
// cout<<c1<<c2<<" "<<x<<endl;
return x;
}
int head[maxn],nxt[maxn*maxn],to[maxn*maxn],tot,wgh[maxn*maxn];
int f[maxn][maxn],t[maxn],a[maxn],b[maxn],c[maxn];
bool vis[maxn];
bool cmp(int &x,int &y){return c[x]<c[y];}
char s[maxn][maxn*2];
void add(int x,int y,int z){
if(x==y) return ;
to[++tot]=y;
nxt[tot]=head[x];
wgh[tot]=z;
head[x]=tot;
}
int fa[maxn];
int find(int x){return fa[x]==x?x:fa[x]=find(fa[x]);}
void merge(int x,int y){
x=find(x),y=find(y);
fa[x]=y;
}
int n,l,q;
void spfa(int S){
f[S][S]=0;
queue<int> q;
q.push(S);
while(q.size()){
int u=q.front();
q.pop();
vis[u]=0;
for(int i=head[u];i;i=nxt[i]){
int v=to[i];
if(f[S][v]>wgh[i]&&f[S][v]>f[S][u]){
f[S][v]=max(wgh[i],f[S][u]);
if(!vis[v]){
q.push(v);
vis[v]=1;
}
}
}
}
}
void Add(int x){
for(int j=1;j<=n;j++) t[j]=(s[x][j*2-2]-48)*50+(s[x][j*2-1]-48);
vector<int> tt(n+1,0);
int ok=0,a=0,b=0;
for(int j=1;j<=n;j++){
if(tt[t[j]]){
if(ok){
ok=-1;
break;
}
ok=j;
a=tt[t[j]];
b=j;
}
else tt[t[j]]=j;
}
if(ok==-1) return;
if(ok==0){
for(int i=1;i<=n;i++) vis[i]=0;
for(int i=1;i<=n;i++){
if(vis[i]) continue;
int k=i;
while(!vis[k]){
vis[k]=1;
merge(k,i);
k=tt[k];
}
}
}
else{
// for(int i=1;i<=n;i++){
// int u=find(i);
// if(f[u][a]>x) continue;
// for(int j=1;j<=n;j++){
// int v=find(j);
// if(f[u][v]<=x||f[ok][v]>x) continue;
// f[u][v]=x;
// }
// }
// for(int i=1;i<=n;i++){
// int u=find(i);
// if(f[u][b]>x) continue;
// for(int j=1;j<=n;j++){
// int v=find(j);
// if(f[u][v]<=x||f[ok][v]>x) continue;
// f[u][v]=x;
// }
// }
add(a,ok,x),add(b,ok,x);
}
}
void solve(){
// cout<<(int)(':'-48)<<endl;
cin>>n>>l>>q;
for(int i=1;i<=l;i++) cin>>s[i];
tot=0;
for(int i=1;i<=n;i++) fa[i]=i;
for(int i=1;i<=n;i++) head[i]=vis[i]=0;
for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) f[i][j]=l+1;
for(int i=1;i<=n;i++) f[i][i]=0;
for(int i=l;i;i--){
for(int j=1;j<=n;j++) t[j]=(s[i][j*2-2]-48)*50+(s[i][j*2-1]-48);
vector<int> tt(n+1,0);
int ok=0,a=0,b=0;
for(int j=1;j<=n;j++){
if(tt[t[j]]){
if(ok){
ok=-1;
break;
}
ok=j;
a=tt[t[j]];
b=j;
}
else tt[t[j]]=j;
}
if(ok==-1) continue;
if(ok==0) for(int j=1;j<=n;j++) add(j,tt[j],i);
else add(a,ok,i),add(b,ok,i);
}
for(int i=1;i<=n;i++) spfa(i);
// for(int i=1;i<=n;i++){
// for(int j=1;j<=n;j++) cout<<f[i][j]<<" ";
// cout<<endl;
// }
for(int i=0;i<q;i++){
a[i]=read(),b[i]=read(),c[i]=read();
if(f[a[i]][b[i]]<=c[i]) cout<<'1';
else cout<<'0';
}
cout<<'\n';
return ;
for(int i=0;i<q;i++) a[i]=read(),b[i]=read(),c[i]=read();
vector<int> ord(q);
iota(ord.begin(),ord.end(),0);
sort(ord.begin(),ord.end(),cmp);
vector<int> ans(q);
int k=0;
for(auto i:ord){
while(k<c[i]){
k++;
Add(k);
}
a[i]=find(a[i]),b[i]=find(b[i]);
if(a[i]==b[i]||f[a[i]][b[i]]<=c[i]) ans[i]=1;
// else ans[0];
else{
queue<int> q;
q.push(a[i]);
for(int j=1;j<=n;j++) vis[j]=0;
vis[a[i]]=1;
while(q.size()){
int u=q.front();
q.pop();
for(int j=head[u];j;j=nxt[j]){
int v=find(to[j]);
if(vis[v]) continue;
vis[v]=1;
q.push(v);
}
}
if(vis[b[i]]) ans[i]=1;
else ans[i]=0;
}
}
for(auto i:ans) cout<<i;
cout<<'\n';
}
signed main(){
// ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
int T=1;
cin>>T;
while(T--) solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 11936kb
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: 2ms
memory: 11996kb
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: 387ms
memory: 13836kb
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: -100
Wrong Answer
time: 536ms
memory: 40656kb
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:
wrong answer 1st lines differ - expected: '000101000101100010001000000010...0101000101000000000010101001000', found: '000101000101100010001000000010...0101000101000000000110101011100'