#include <iostream>
#include<vector>
#include<string>
using namespace std; 
int main()
{
	const int maxn=4;
	vector<int> vec1;
	vector<string> vec2;
	vec2.push_back("Lixiang");
	vec2.push_back("~,~");
	vec2.push_back("Wangxiaoqin");
	for(int i=0;i<=2;i++)
	cout<<vec2[i]<<endl;
	vector<double> vec3[maxn];
		vec1.push_back(0);
		vec1.push_back(6);
		vec1.push_back(1);
		vec1.push_back(6);
		vec1.push_back(0);
for(int i=0;i<=4;i++)
	{
		cout<<vec1[i]<<' ';
	}
cout<<endl;
vec1.pop_back();
cout<<vec1.size()<<endl;
vec1.clear();
cout<<vec1.size()<<endl;
vec1.resize(100);
cout<<vec1.size()<<endl;
for(int  i=0;i<=1;i++)
	for(int j=0;j<=2;j++)
	{
		vec3[i].push_back(j);
	}
	for	(int i=0;i<2;i++)
	{
		for(int j=0;j<3;j++)
		{
		cout<<vec3[i][j]<<' ';
		}
		cout<<endl;
	}
system("pause");
	return 0;
}