Compilare: main.cpp: In function 'void solve(int, int)': main.cpp:36:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j <= aux[i].first && poz < ans.size();) { ~~~~^~~~~~~~~~~~ main.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int x = poz; x < ans.size(); ++x) ~~^~~~~~~~~~~~ main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; poz < ans.size(); ++poz) ~~~~^~~~~~~~~~~~