vector<const char*> in = { "in/in_a.in",
                           "in/in_b.in",
                           "in/in_c.in",
                           "in/in_d.in",
                           "in/in_e.in",
                           "in/in_f.in" };
vector<const char*> out = {"out_a.txt",
                           "out_b.txt",
                           "out_c.txt",
                           "out_d.txt",
                           "out_e.txt",
                           "out_f.txt" };

signed main() {
    boostIO();

    for (int i = 0; i < 6; ++i) {
        //freopen("input.txt", "r", stdin);
        freopen(in[i], "r", stdin);
        freopen(out[i], "w", stdout);


    }


}