update

src/11/27/P7960.cpp

@@ -0,0 +1,61 @@
+#include <bitset>
+#include <cstdint>
+#include <iostream>
+using namespace std;
+using ll = int64_t;
+
+ll const maxx{ll(1e6+5)};
+ll t,x,minPrim[maxx],isSeven[maxx];
+bitset<maxx>isPrim;
+
+void initPrim(){
+    isPrim.set();
+    for(ll i{2};i<=maxx;i++){
+        if(isPrim[i]){
+            for(ll j{i+i};j<=maxx;j+=i){
+                isPrim[j]=false;
+                if(!minPrim[j]){
+                    minPrim[j]=i;
+                }
+            }
+        }
+    }
+}
+
+bool check(ll const& num){
+    if(isSeven[num]!=0)return isSeven[num]==-1?false:true;
+    ll tmp{num};
+    while(tmp!=0){
+        if(tmp%10==7){
+            isSeven[num]=true;
+            return true;
+        }
+    }
+    isSeven[num]=-1;
+    return false;
+}
+
+int main(){
+    ios::sync_with_stdio(false),cin.tie(nullptr),cout.tie(nullptr);
+
+    initPrim();
+
+    for(ll i{1};i<=10;i++){
+        cout<<isPrim[i]<<' ';
+    }
+    cout<<'\n';
+    for(ll i{1};i<=10;i++){
+        cout<<minPrim[i]<<' ';
+    }
+    cout<<'\n';
+
+    cin>>t;
+    while(t--){
+        cin>>x;
+        while(x!=0){
+            if(check(minPrim[x])){
+                
+            }
+        }
+    }
+}

src/11/helloworld/helloworld.cpp

@@ -1,71 +1,22 @@
-#include <array>
-#include <cstdint>
 #include <iostream>
-#include <random>
-#include <stdexcept>
-#include <string>
-#include <type_traits>
-#include <utility>
-#include <variant>
-
-using namespace std;
-using ll = int64_t;
-
-template<class T,class P>
-ostream&operator<<(ostream&os,pair<T,P>const&p){
-    os<<"( "<<p.first<<", "<<p.second<<" )";
-    return os;
-}
-
-variant<ll,string> test(){
-    random_device v;
-    mt19937 mt(v());
-    uniform_int_distribution<short> un(0,50);
-    ll number{un(mt)};
-    if(!number){
-        return "Zengtudor";
-    }
-    return number;
-}
-
-template<class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
-template<class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
-
-template<class T,class ...Args>
-struct Array{
-    static constexpr ll size(){return sizeof...(Args)+1;}
-    decay_t<T> arr[size()];
-    Array(T const&t, Args const&...args){
-        arr[0]=t;
-        ll idx{1};
-        ((arr[idx++]=args),...);
-    }
-    friend ostream&operator<<(ostream&os,Array const&arr){
-        os<<"[ ";
-        for(ll i{0};i<size();i++){
-            os<<arr.arr[i]<<" ,";
-        }
-        cout<<" ]";
-        return os;
-    }
-};
-
-// template<class T,class ...Args>
-// Array(T,Args...)->Array<T,Args...>;
-
+#include <memory>
 int main(){
-    array<int,2> a{};
-    for(auto const& i:a)cout<<i<<" ";
-    cout<<'\n';
-    Array arr {1,2,3};
-    cout<<arr<<'\n';
-    // cout<<sizeof(test())<<'\n';
-    // ll n{100};
-    // // cin>>n;
-    // while(n--){
-    //     cout<<visit(overloaded{
-    //         [](string const&str){cout<<"is str\n";throw runtime_error("throwing error");return 1;},
-    //         [](ll const& n){cout<<"is number\n";return 2;}
-    //     },test())<<"\n";
-    // }
+    using namespace std;
+    struct X{
+        X(int const& x){cout<<"X is constructing: "<<x<<'\n';}
+        ~X(){cout<<"X is dead\n";}
+    };
+    struct T{
+        T():t{1}{};
+        int t;
+    };
+
+    auto b = make_unique<X>(1);
+    int t{5};
+    while(t--){
+        T t;
+        cout<<t.t<<'\n';
+    }
+    cout<<"retrun 0;\n";
+    return 0;
 }