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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#733080 | #9573. Social Media | KIRITO1211# | WA | 36ms | 7748kb | C++23 | 2.0kb | 2024-11-10 17:06:17 | 2024-11-10 17:06:17 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+10;
int T,n,m,k,in[N],vis[N],h[N],tot,ori[N];
struct edge{
int v,nxt;
}e[N*4];
void add(int u,int v){
e[++tot].v=v,e[tot].nxt=h[u],h[u]=tot;
}
struct node{
int id,val;
}a[N];
bool cmp(node a,node b){return a.val>b.val;}
int main(){
cin>>T;
while(T--){
for(int i=1;i<=k;i++)a[i].id=a[i].val=0;
for(int i=1;i<=k;i++)ori[i]=vis[i]=h[i]=0;
tot=0;
int ans=0;
cin>>n>>m>>k;
for(int i=1;i<=n;i++){
cin>>in[i];
vis[in[i]]=1;
}
for(int i=1;i<=m;i++){
int x,y;
cin>>x>>y;
if(x==y&&vis[x]){
ans++;
}
else if(x!=y&&vis[x]&&vis[y]){
ans++;
}
else if(x==y&&!vis[x]){
a[x].id=x,a[x].val++;
}
else if(x!=y&&(!vis[x]&&vis[y])){
a[x].id=x,a[x].val++;
}
else if(x!=y&&(vis[x]&&!vis[y])){
a[y].id=y,a[y].val++;
}
else if(x!=y&&(!vis[x]&&!vis[y])){
add(x,y);
add(y,x);
}
}
sort(a+1,a+1+k,cmp);
for(int i=1;i<=k;i++){
if(a[i].val==0)break;
ori[a[i].id]=i;
}
int p=a[1].val,q=p-2;
int ans1=a[1].val+a[2].val;
for(int i=1;i<=k;i++){
map<int,int>cnt;
if(a[i].val<q)break;
int c=a[i].id;
for(int j=h[c];j;j=e[j].nxt){
int v=e[j].v;
cnt[v]++;
}
for(int j=h[c];j;j=e[j].nxt){
int v=e[j].v;
//cout<<cnt[v]<<" "<<a[i].val<<" "<<a[ori[v]].val<<endl;
ans1=max(ans1,cnt[v]+a[i].val+a[ori[v]].val);
}
}
cout<<ans+ans1<<endl;
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 7748kb
input:
5 4 12 7 5 7 3 6 3 6 2 2 1 4 2 4 1 3 7 6 4 1 5 4 1 1 1 1 2 1 3 7 2 7 6 2 4 1 2 3 2 2 5 5 4 2 6 4 6 2 6 1 1 2 1 1 2 2 1 2 1 2 1 2 2 1 100 24 11 11 24
output:
9 5 1 1 1
result:
ok 5 number(s): "9 5 1 1 1"
Test #2:
score: -100
Wrong Answer
time: 36ms
memory: 7652kb
input:
10000 19 12 20 8 12 1 5 11 7 17 13 19 6 3 9 10 15 14 20 4 18 16 4 11 7 1 8 4 16 19 1 13 15 2 16 2 8 7 3 15 11 13 5 20 18 14 17 14 20 2 9 1 12 8 11 10 17 18 16 3 15 5 14 20 13 7 15 10 3 2 5 16 7 8 6 1 6 4 18 16 1 8 4 1 20 6 6 9 4 15 7 5 14 9 1 3 18 9 15 18 17 15 11 14 7 19 7 3 1 2 5 6 4 7 5 1 4 5 3 1...
output:
12 14 0 19 6 5 1 11 19 4 3 10 4 1 4 19 15 2 18 4 17 5 0 2 5 17 3 2 6 15 6 3 6 4 4 7 3 7 4 1 16 15 2 3 6 12 12 7 6 8 8 6 8 11 16 0 4 9 8 14 2 6 19 19 16 8 20 14 8 12 7 9 6 8 2 17 9 5 5 3 6 6 20 8 13 11 10 5 1 6 2 0 8 5 8 11 7 14 10 9 9 11 7 9 5 2 8 14 10 5 3 5 5 10 1 6 9 16 5 3 19 1 4 8 8 10 4 2 1 15...
result:
wrong answer 3rd numbers differ - expected: '1', found: '0'