Compilare: main.cpp: In function 'void Dfs(int)': main.cpp:21:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int k = 0; k < s.size(); k++) | ~~^~~~~~~~~~ main.cpp: In function 'void Dijkstra(int)': main.cpp:49:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int j = 0; j < s.size(); j++) | ~~^~~~~~~~~~ main.cpp:57:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int k = 0; k < s.size(); k++) | ~~^~~~~~~~~~