Compilare: main.cpp: In function 'int find_augmenting(std::vector<std::vector<int> >&, std::vector<int>&, int, int)': main.cpp:21:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int neighbor = 1; neighbor <= residual.size() - 1; neighbor++) | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~