#include<iostream>#include<vector>
using namespace std;intmain(){
vector<int> arr;int m=0;
cout <<"输入的元素个数:"<< endl;
cin >> m;
cout <<"m="<< m << endl;int tmp=0;for(int i =0; i < m; i++){
cin >> tmp;
arr.push_back(tmp);}for(auto c : arr){
cout << c <<" ";}return0;}