Compilare: user.cpp: In function ‘void count(int)’: user.cpp:15:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:49:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0, player = 1; i < sol.size(); i++, player++) ^