Compilare: main.cpp: In function 'void dfs(int)': main.cpp:279:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 279 | for(int i=0;i<ed[pz].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void remove_edge(int, int)': main.cpp:289:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 289 | for(int i = 0; i < ed[a].size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp:295:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 295 | for(int i = 0; i < ed[b].size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void dfssize(int, int)': main.cpp:306:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 306 | for(int i=0;i<ed[pz].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int getcentroid(int, int, int)': main.cpp:317:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 317 | for(int i=0;i<ed[pz].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:357:17: warning: unused variable 'cnt' [-Wunused-variable] 357 | int t,n,i,j,cnt=0; | ^~~