Borderou de evaluare (job #803409)

Compilare: main.cpp: In function 'std::string toForm(int, std::string)': main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} and 'int' [-Wsign-compare] 17 | while (nr.size() < n) { | ~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:37:26: warning: unused variable 'k' [-Wunused-variable] 37 | int apr = 0, st = 0, k = 0, max_k = 0, current_k = 0; | ^