Compilare: main.cpp: In function 'void add(long long int, long long int)': main.cpp:37:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(poz==curr.size()) | ~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:23: warning: unused variable 'l' [-Wunused-variable] 61 | long long n,i,j,k,l,m,x; | ^