#include <iostream>     // std::cout
#include <fstream>      // std::ifstream
#include <vector>
#include <string>
#include <cstdlib>
#include <sstream>
#include <cctype>
#include <iomanip>
using namespace std;                                                        ////////////////////////////////////////////////////////////////////////////////////
 
 
 
bool is_number(const std::string& s){                                       /// DO NOT FORGET WHAT"S BELOW THIS~!^#$*&$%*^%%^&$%^$#^$^%$^*^&(%^&^%^*^*^&(&*(&%&%
    return !s.empty() && s.find_first_not_of("0123456789") == string::npos; /// I'm supposed to check this line , SO DO NOT FORGET!!!!!!!!@#!@#!@#!!@#!@#!@#!@#!!!
}                                                                           /// /// ///  //////////////////////////////////////////////////////////////////////
 
 
/// normal = no more than 6 digits
/// scientific = no more than 7 digits
 
struct data{
 
data operator>>(string s){
cout<<endl<<s;
}
 
operator bool(){
cout<<endl<<"NICE TO MEET YOU";
return true;
}
};
 
 
 
int main(){
string a = " hey 1234 man of 5678";
stringstream strstr(a);
string test;
vector<int>numvec;
int num;
while(strstr>>num || !strstr.eof()){
    if(strstr.fail()){
        strstr.clear();
        string kpz;
        strstr>>kpz;
        continue;
    }
    numvec.push_back(num);
}
for(int i = 0;i < numvec.size();++i){
    cout<<numvec[i]<<'\t';
}
return 0;
}

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