Compilare: main.cpp: In function 'void create(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<v[tata].size();++i) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp:73:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for(i=0;i<v[r].size();++i) | ~^~~~~~~~~~~~ main.cpp:80:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~