#include<iostream>
using namespace std;
#include<vector>
void test01()
{
vector<int> arr;
int n = 0;
while (cin>>n)
{
arr.push_back(n);
//当获取到回车,那么就跳出输入循环
if (cin.get() == '\n')
break;
}
//进行测试
cout << arr[0] << endl;
}
int main()
{
test01();
return 0;
}