Compilare: main.cpp: In function 'void Euler(int)': main.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=0;i<L[k].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int j=0;j<sol[i].size();j++) | ~^~~~~~~~~~~~~~