Compilare: main.cpp: In function 'void dij(int, int)': main.cpp:26:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int i = 0 ; i < v[nod].size() ; i++) | ~~^~~~~~~~~~~~~~~ main.cpp:36:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i = 0 ; i < tel[nod].size() ; i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void bfs(int)': main.cpp:68:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i = 0 ; i < v[nod].size () ; i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:57:9: warning: unused variable 'cnt' [-Wunused-variable] 57 | int cnt = 0; | ^~~ main.cpp: In function 'void dfs(int)': main.cpp:96:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(i = 0 ; i < v[start].size() ; i++) | ~~^~~~~~~~~~~~~~~~~