Compilare: main.cpp: In function 'void dfsinit(long long int)': main.cpp:51:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(long long i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfsheavy(long long int)': main.cpp:74:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(long long i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:178:19: warning: unused variable 'a' [-Wunused-variable] 178 | long long a,b,c; | ^ main.cpp:178:21: warning: unused variable 'b' [-Wunused-variable] 178 | long long a,b,c; | ^ main.cpp:178:23: warning: unused variable 'c' [-Wunused-variable] 178 | long long a,b,c; | ^ main.cpp:174:17: warning: unused variable 'j' [-Wunused-variable] 174 | long long i,j; | ^