Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i=0;i<g[x].size();i++) | ~^~~~~~~~~~~~ main.cpp:58:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int j=0;j<f[k].size();j++) | ~^~~~~~~~~~~~ main.cpp:42:9: warning: unused variable 'total' [-Wunused-variable] 42 | int total=1; | ^~~~~