Compilare: main.cpp: In function 'void fill(int, int, int, int, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:22:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:22:72: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:69:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:75:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:75:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | if (new_i >= 0 && new_i < padure.size() && new_j >= 0 && new_j < padure[new_i].size() && | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~