Compilare: main.cpp: In function 'void dfc(int)': main.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(i=0;i<conex[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:14:9: warning: unused variable 'x' [-Wunused-variable] 14 | int x,i,j; | ^ main.cpp:14:13: warning: unused variable 'j' [-Wunused-variable] 14 | int x,i,j; | ^ main.cpp: In function 'int main()': main.cpp:27:24: warning: unused variable 's' [-Wunused-variable] 27 | int n, m, i, j, k, s,x,nr=0; | ^ main.cpp:27:26: warning: unused variable 'x' [-Wunused-variable] 27 | int n, m, i, j, k, s,x,nr=0; | ^