Compilare: main.cpp: In function 'void solve()': main.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0;i<forts.size();++i) { | ~^~~~~~~~~~~~~ main.cpp:24:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int v=0,vecin;v<conn[i].size();++v){ | ~^~~~~~~~~~~~~~~