Compilare: main.cpp: In function 'void euler(int)': main.cpp:21:48: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 21 | next = ((nod << 1) & (1 << (n - 1) - 1)) | b; | ~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(i = 0; i < afis.size(); i++){ | ~~^~~~~~~~~~~~~