update

20240907/P1352/P1352.cpp

@@ -0,0 +1,53 @@
+#include <algorithm>
+#include <cassert>
+#include <iostream>
+#include <istream>
+#include <vector>
+
+const int MAX_N=6e3+5;
+
+struct Node{
+    std::vector<int> sons;
+    int r;
+}nodes[MAX_N];
+
+bool had_father[MAX_N];
+
+int dp[MAX_N][2];
+
+void dfs(const int n){
+    dp[n][1]=nodes[n].r;
+    for(auto &i:nodes[n].sons){
+        dfs(i);
+        dp[n][0]+=std::max(dp[i][1],dp[i][0]);
+        dp[n][1]+=dp[i][0];
+    }
+}
+
+int main(){
+    std::iostream::sync_with_stdio(false),std::cin.tie(0),std::cout.tie(0);
+
+    int n;
+    std::cin>>n;
+
+    for(int i=1;i<=n;i++){
+        int _r;
+        std::cin>>_r;
+        nodes[i].r=_r;
+    }
+    for(int i=1;i<n;i++){
+        int s,f;
+        std::cin>>s>>f;
+        nodes[f].sons.push_back(s);
+        had_father[s]=true;
+    }
+    int master{-1};
+    for(int i=1;i<=n;i++){
+        if(had_father[i]==false){
+            master=i;
+        }
+    }
+    assert(master!=-1);
+    dfs(master);
+    std::cout<<std::max(dp[master][0],dp[master][1])<<"\n";
+}

test.cpp

@@ -1,21 +1,38 @@
-//using C++17
-
 #include <cmath>
 #include<iostream>
+#include <vector>
+
+std::ostream& operator<<(std::ostream &os,const std::vector<int> &v){
+    os<<"vector { ";
+    for(int i=0;i<v.size()-1;i++){
+        os<<v[i]<<" ,";
+    }
+    os<<v[v.size()-1]<<" }";
+    return os;
+}
+
+template<typename ...Args>
+void print(const Args& ...args){
+    ((std::cout<<args),...);
+}
 
 template<typename ...Args>
 void println(const Args& ...args){
-    ((std::cout<<args<<" "),...);
+    (print(args," "),...);
-    std::cout<<"\n";
+    print("\n");
 }
 
+#define NAME_VALUE(v)#v,":",(v)
+
 int main(){
     println("Hello,World!","-by","Zengtudor");
     println("End");
-    println(std::pow(2,10));
+    println(NAME_VALUE(std::pow(2,10)));
+    println(NAME_VALUE((int)0x7FFFFFFF));
+    std::vector<int> v(10);
+    v[0]=1;
+    for(int i=1;i<v.size();i++){
+        v[i]=(v[i-1]*3+2)%49;
+    }
+    println(v);
 }
-
-/*
-Hello,World! -by Zengtudor 
-End
-*/

xmake.lua

@@ -45,4 +45,7 @@ target("test")
     add_files("test.cpp")
 
 target("bitset")
-    add_files("20240906/bitset.cpp")
+    add_files("20240906/bitset.cpp")
+
+target("P1352")
+    add_files("20240907/P1352/P1352.cpp")