#include <iostream>
#include <string>
using namespace std;
int main()
{
    cout << "enter your text" << endl;
    string s;
    getline(cin, s);
    int size = s.size();
    for (int i = 0; i < size; i++)
    {
        if (s[i] == 'ce')
        {
            s.replace(s.find("ce"), "se");
        }
    }
    cout << endl << endl;
    cout << "your new text" << endl <<s<< endl;
}