update

.gitignore

@@ -4,4 +4,5 @@ build
 *.json
 /cmake-build*
 /build*
-/test*.txt
+/test*.txt
+/out

src/P1395/P1395.cpp

@@ -0,0 +1,40 @@
+#include <cstdint>
+#include <iostream>
+#include <vector>
+
+using ll = int64_t;
+using vl = std::vector<ll>;
+auto &ci = std::cin;
+auto &co = std::cout;
+
+const ll max_n = 5e4+5;
+ll *sn = new ll[max_n];
+auto *nds = new vl[max_n];
+
+void dfs(ll ft, ll n){
+    if(nds[n].size()<=1){
+        return;
+    }
+    sn[n]=1;
+    for(ll i:nds[n]){
+        if(i==ft){
+            continue;
+        }
+        dfs(n, i);
+        sn[n]+=sn[i];
+    }
+    return;
+}
+
+int main(){
+    ll n;
+    ci>>n;
+    for(ll i{1}; i<n; i++){
+        ll a, b;
+        ci>>a>>b;
+        nds[a].push_back(b);
+        nds[b].push_back(a);
+    }
+    for(ll i{1};i<=n;i++)co<<sn[i]<<' ';
+    co<<'\n';
+}