Compilare: user.cpp: In function ‘int main()’: user.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vopsit[1][i-1].size();j++) ^ user.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vopsit[3][i-1].size();j++) ^ user.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<max(vopsit[g-1][i-1].size(),vopsit[g+1][i-1].size());j++) ^ user.cpp:28:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vopsit[g-1][i-1].size()-1>=j) ^ user.cpp:30:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vopsit[g+1][i-1].size()-1>=j) ^ user.cpp:50:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vopsit[g][n].size()-1>=j) ^