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这道题太难了，谁会啊！

#include <iostream>
#include <cmath>
#include <string>
#include <cstring>
#include <vector>
#include <queue>
#include <cstdio>
#include <algorithm>
#include <iomanip>
#include <thread>
#define EXIT_NO_ERROR 0
using namespace std;

namespace System{
    class Solution{
    public:
        bool Solve_Function(const string THE_MAIN_VALUE_OF_FUNCTION){
            cout << "Hello world" << endl;
            return EXIT_NO_ERROR;
        }
    };
};


signed int main(void){
    System::Solution Solution_of_system;
    return Solution_of_system.Solve_Function("The main information of programme");
}