Compilare: main.cpp: In function 'int main()': main.cpp:73:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Child>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | if(cid[1] < c[1].size() && get(2) <= get(4)) | ~~~~~~~^~~~~~~~~~~~~ main.cpp:45:13: warning: unused variable 'j' [-Wunused-variable] 45 | int n, i, j, k1, k2, k, nr; | ^ main.cpp:45:27: warning: unused variable 'nr' [-Wunused-variable] 45 | int n, i, j, k1, k2, k, nr; | ^~