Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:14:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | while(index<vec.size()) | ~~~~~^~~~~~~~~~~ main.cpp:33:13: warning: unused variable 'j' [-Wunused-variable] 33 | int n,i,j,k,l,x,y,index,curr; | ^ main.cpp:33:15: warning: unused variable 'k' [-Wunused-variable] 33 | int n,i,j,k,l,x,y,index,curr; | ^ main.cpp:33:17: warning: unused variable 'l' [-Wunused-variable] 33 | int n,i,j,k,l,x,y,index,curr; | ^