Compilare: main.cpp: In function 'void solve()': main.cpp:131:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 131 | if (cnt!=0 && cnt!=mult.size()) | ~~~^~~~~~~~~~~~~ main.cpp:136:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 136 | if (cnt == mult.size()) | ~~~~^~~~~~~~~~~~~~