Compilare: main.cpp: In function 'void dfs(int)': main.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i=0;i<v[k].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for (int i=0;i<prim.size();i++){ | ~^~~~~~~~~~~~ main.cpp:90:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i=0;i<secund.size();i++){ | ~^~~~~~~~~~~~~~