#include <iostream>
#include <fstream>

int main (){

int x = 0;

ifstream fin;
fin.open ("a.txt");
    if (!file){
    std::cout<<"error while opening the file"<<endl;
          }

    while (!file.eof()){
        if (fin.get() == static_cast <int> ('e')){
            x++
            }
            }

std::cout<<"x"<<endl;

return 0;
}