Compilare: main.cpp: In member function 'void FordFulkerson::init()': main.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, long long int> > >::size_type' {aka 'unsigned int'} [-Wsign-compare] 31 | for(int i=0; i<g.size(); i++){ | ~^~~~~~~~~ main.cpp:32:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'unsigned int'} [-Wsign-compare] 32 | for(int j=0; j<g[i].size(); j++){ | ~^~~~~~~~~~~~ main.cpp: In member function 'bool FordFulkerson::findAndUpdate(int, int, long long int&)': main.cpp:51:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 51 | for(int i=0; i < eIndexes[u].size(); i++){ | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<std::vector<std::pair<int, long long int> > > BuildDG(std::vector<std::vector<int> >&)': main.cpp:90:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'unsigned int'} [-Wsign-compare] 90 | for(int u=0; u<g.size(); u++){ | ~^~~~~~~~~ main.cpp:94:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 94 | for(int j=0; j<g[u].size(); j++){ | ~^~~~~~~~~~~~ main.cpp: In function 'std::vector<std::vector<int> > BuildTransitiveClosure(std::vector<std::vector<int> >&)': main.cpp:126:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'unsigned int'} [-Wsign-compare] 126 | for(int u=0; u<g.size(); u++){ | ~^~~~~~~~~ main.cpp:131:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'unsigned int'} [-Wsign-compare] 131 | for(int u=0; u<g.size(); u++){ | ~^~~~~~~~~ main.cpp:132:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'unsigned int'} [-Wsign-compare] 132 | for(int v=0; v<g.size(); v++){ | ~^~~~~~~~~