Compilare: main.cpp: In function 'void fa(int)': main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i = 0 ; i < g[x].size() ;) | ~~^~~~~~~~~~~~~ main.cpp:21:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int j = 0 ; j < g[t].size() ; j++) | ~~^~~~~~~~~~~~~