Compilare: main.cpp: In function 'int main()': main.cpp:44:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(i = 0; i < divisors.size(); i++) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(j = i; j < divisors.size(); j++) { | ~~^~~~~~~~~~~~~~~~~ main.cpp:59:19: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::set<ab, cmp>::size_type' {aka 'long unsigned int'} [-Wformat=] 59 | fprintf(fout, "%d\n", s.size()); | ~^ ~~~~~~~~ | | | | int std::set<ab, cmp>::size_type {aka long unsigned int} | %ld