Compilare: main.cpp: In function 'void dfs1(int, int)': main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int j = 0; j < neighbours[node].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void heavyfirst(int, int)': main.cpp:51:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int j = 0; j < neighbours[node].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void tarjandfs(int)': main.cpp:63:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for (int j = 0; j < lcaquery[node].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:68:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int j = 0; j < neighbours[node].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~