Compilare: main.cpp: In function 'void df(int, int)': main.cpp:18:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(i=0;i<a[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp:18:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 18 | for(i=0;i<a[nod].size();++i) | ^~~ main.cpp:25:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 25 | sum[tata1]+=sum[nod]; | ^~~