Compilare: main.cpp: In function 'void Fill(int)': main.cpp:68:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, bool> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | if(I==M.size()-1 && J==M.size()-1) | ~^~~~~~~~~~~~ main.cpp:68:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, bool> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | if(I==M.size()-1 && J==M.size()-1) | ~^~~~~~~~~~~~ main.cpp:80:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, bool> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if(i>=0 && i<M.size() && j>=0 && j<M.size() && M[i][j].second==true) | ~^~~~~~~~~ main.cpp:80:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, bool> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if(i>=0 && i<M.size() && j>=0 && j<M.size() && M[i][j].second==true) | ~^~~~~~~~~