Compilare: main.cpp: In function 'int main()': main.cpp:18:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] bool ok = (ncif < ull(str.size()) ? 1 : 0); ~~~~~^~~~~~~~~~~~~~~~~ main.cpp:19:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < rez.size(); i++) ~~^~~~~~~~~~~~ main.cpp:23:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[t] - 2 <= p) ~~~~~~~~~^~~~ main.cpp:32:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[str[i] - '0'] - 2 <= p) ~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:37:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[t] - 2 <= p) ~~~~~~~~~^~~~