Compilare: main.cpp: In function 'void solve()': main.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(i=1;i<=all.size();i++) | ~^~~~~~~~~~~~ main.cpp:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(poz == all.size() and who[all.size()] != -1) | ~~~~^~~~~~~~~~~~~