Compilare: main.cpp: In function 'void dfs(int)': main.cpp:19:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(j=0; j<adj[curr].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:30:19: warning: unused variable 'l' [-Wunused-variable] 30 | int cer,i,j,k,l,n,m,a,b,curr; | ^