7.3.18

#include <iostream>
#include <cmath>
#include <fstream>
#include <string>
#include <Windows.h>

using namespace std;

int main()
{
    setlocale(LC_ALL, "Russian");
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);
    ifstream in("input.txt");
    ofstream out("output.txt");
    string s, k;
    int c = 0;
    while (getline(in, s)) {
        for (int i = 0; i < s.length(); i++) {
            if (not(s[i] >= ' ' && s[i] <= '&') && not (s[i] >= '(' && s[i] <= '/')) {
                c++;
            }
            else {
                if (c == 1) {
                    int h = i - 1;
                    s.erase(h, 1);
                    c = 0;
                    i -= 1;
                }
                else c = 0;
            }
        }
        out << s << endl;
    }
    return 0;
}