Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:38:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:19: warning: unused variable 'j' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^ main.cpp:63:21: warning: unused variable 'k' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^ main.cpp:63:23: warning: unused variable 'l' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^ main.cpp:63:29: warning: unused variable 'x' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^ main.cpp:63:31: warning: unused variable 'st' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^~ main.cpp:63:34: warning: unused variable 'dr' [-Wunused-variable] 63 | long long n,i,j,k,l,m,a,x,st,dr,b; | ^~