Compilare: main.cpp: In function 'int main()': main.cpp:30:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int p = 0; p < v[i].size(); p ++) | ~~^~~~~~~~~~~~~ main.cpp:32:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int p = 0; p < v[i].size(); p ++) | ~~^~~~~~~~~~~~~ main.cpp:35:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for(int j = 0; j < v[nod].size(); j ++) | ~~^~~~~~~~~~~~~~~