Compilare: main.cpp: In member function 'void FordFulkerson::init()': main.cpp:420:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 420 | for(int i = 0; i < g.size(); i++){ | ~~^~~~~~~~~~ main.cpp:421:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 421 | for(int j = 0; j < g[i].size(); j++){ | ~~^~~~~~~~~~~~~ main.cpp: In member function 'bool FordFulkerson::findAndUpdate(int, int, long long int&)': main.cpp:443:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 443 | for (int i = 0; i < eIndexes[u]. size(); i++){ | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS(std::vector<std::vector<int> >, std::vector<std::vector<int> >&)': main.cpp:545:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 545 | for(int nd = 0; nd < edges.size(); nd++){ | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:578:20: warning: loop variable 'row' creates a copy from type 'const std::vector<std::pair<int, long long int> >' [-Wrange-loop-construct] 578 | for(const auto row : graph){ | ^~~ main.cpp:578:20: note: use reference type to prevent copying 578 | for(const auto row : graph){ | ^~~ | & main.cpp:579:24: warning: loop variable 'elem' creates a copy from type 'const std::pair<int, long long int>' [-Wrange-loop-construct] 579 | for(const auto elem : row){ | ^~~~ main.cpp:579:24: note: use reference type to prevent copying 579 | for(const auto elem : row){ | ^~~~ | &