C++ :

#include<iostream>
#include<string>
#include<cctype>
using namespace std;
int main()
{
	string from,to;
	getline(cin,from);
	int len=from.size(),j=0;
	for (int i=0; i<len; i++)
		if (isalpha(from[i])) to+=from[i];
	cout<<to<<endl;
	return 0;
}