Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:33:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int)': main.cpp:53:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs3(int, int)': main.cpp:136:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 136 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:197:11: warning: unused variable 'j' [-Wunused-variable] 197 | int i,j,k,l,a,b,w,q,x,dist,dist2,lc,copdist; | ^ main.cpp:197:13: warning: unused variable 'k' [-Wunused-variable] 197 | int i,j,k,l,a,b,w,q,x,dist,dist2,lc,copdist; | ^ main.cpp:197:15: warning: unused variable 'l' [-Wunused-variable] 197 | int i,j,k,l,a,b,w,q,x,dist,dist2,lc,copdist; | ^