Compilare: main.cpp: In function 'void dfs(int)': main.cpp:60:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(i=0; i<a[x].size( ); i++) | ~^~~~~~~~~~~~~ main.cpp: In function 'void afisare()': main.cpp:68:9: warning: unused variable 'i' [-Wunused-variable] 68 | int i, j; | ^ main.cpp:68:12: warning: unused variable 'j' [-Wunused-variable] 68 | int i, j; | ^