Compilare: main.cpp: In constructor 'graph::graph(int, int, std::vector<std::vector<int> >&)': main.cpp:81:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for( int j = 0; j < ad[i].size(); ++j) | ~~^~~~~~~~~~~~~~ main.cpp: In constructor 'graph::graph(int, int, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:89:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for( int j = 0; j < ad[i].size(); ++j){ | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'void graph::DFS(int, bool*)': main.cpp:125:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | for( int i = 0; i < Ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::DFSr(int, std::vector<bool>&, std::vector<std::vector<int> >&, std::vector<int>&)': main.cpp:133:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 133 | for( int i = 0; i < ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::BFS(int)': main.cpp:150:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 150 | for( int i = 0; i < Ad[x].size(); ++i ){ | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'void graph::Kruskal()': main.cpp:188:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 188 | for( int j = 0; j < Ad[i].size(); ++j ){ | ~~^~~~~~~~~~~~~~ main.cpp:210:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 210 | for( int i = 0; i < Sol.size(); ++i ) | ~~^~~~~~~~~~~~ main.cpp: In member function 'void graph::Dijkstra(int)': main.cpp:227:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 227 | for( int i = 0; i < Ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::BellmanFord(int)': main.cpp:259:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 259 | for( int i = 0; i < Ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::TopoDFS(int, std::vector<bool>&, std::stack<int>&)': main.cpp:293:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 293 | for( int i = 0; i < Ad[nod].size(); ++i ){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::vector<int> > graph::StronglyConnectedComponents()': main.cpp:318:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 318 | for( int j = 0; j < Ad[i].size(); ++j) | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'int** graph::RoyFloyd()': main.cpp:351:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 351 | for( int j = 0; j < Ad[i].size(); ++j ) | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'void graph::DFSdiameter(int, int, int, int&, int&)': main.cpp:373:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 373 | for( int i = 0; i < Ad[nod].size(); ++i )