From 7dde412ebf7cb966fe1b6ab6a78b9c678e46fa8b Mon Sep 17 00:00:00 2001
From: Zengtudor <Zengtudor@outlook.com>
Date: Sat, 23 Nov 2024 23:07:43 +0800
Subject: [PATCH] update

---
 src/P9869/P9869.cpp | 53 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 51 insertions(+), 2 deletions(-)

diff --git a/src/P9869/P9869.cpp b/src/P9869/P9869.cpp
index 5319f3f..4bee054 100644
--- a/src/P9869/P9869.cpp
+++ b/src/P9869/P9869.cpp
@@ -52,7 +52,24 @@ namespace s1{
 namespace s2{
     char c[maxn];
 }
-
+namespace s3{
+    char c[maxn];
+    struct USF{
+        ll f[maxn];
+        USF(){
+            for(ll i{1};i<=n;i++){
+                f[i]=i;
+            }
+        }
+        ll find(ll const&u){
+            if(f[u]==u)return u;
+            return f[u]=find(f[u]);
+        }
+        void merge(ll const &u,ll const &v){
+            f[find(u)]=find(v);
+        }
+    }usf;
+}
 
 int main(){
     ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
@@ -89,6 +106,38 @@ int main(){
             cout<<ans<<'\n';
         }
     }else if(c==5||c==6){
-        
+        while(t--){
+            cin>>n>>m;
+            memset(s3::c, 'T', sizeof(s3::c));
+            
+            ll ans{};
+            for(ll i{1};i<=m;i++){
+                cin>>v[i];
+                if(v[i]=='U'){
+                    cin>>tmp;
+                    s3::c[tmp]='U';
+                }else{
+                    cin>>vi[i]>>vj[i];
+                    s3::usf.merge(vi[i],vj[i]);
+                    s3::c[vi[i]]=s3::c[vj[i]];
+                }
+            }
+            unordered_map<ll,pair<ll,bool>> mm;
+            for(ll i{1};i<=n;i++){
+                mm[s3::usf.find(i)].first++;
+                if(s3::c[i]=='U'){
+                    mm[s3::usf.find(i)].second=true;
+                }
+            }
+            for(auto [k,v]:mm){
+                if(v.second){
+                    ans+=v.first;
+                }
+            }
+            cout<<ans<<'\n';
+        }
     }
+    // else if(c==7||c==8){
+
+    // }
 }
\ No newline at end of file