#include<bits/stdc++.h>
using namespace std;
int main()
{
	string x;   //first letter
	string y;  //second letter
	string z; //third letter
	cout<<"Enter Three Letters please :"<<endl;
	cin>>x>>y>>z;
	cout<<x[0]<<y[0]<<z[0]<<endl;
	
	return 0;
}