Compilare: main.cpp: In function 'void solve()': main.cpp:18:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 18 | if(n[i]!='0') | ^ main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 28 | if(s.size()==lm) | ~~~~~~~~^~~~ main.cpp:37:16: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 37 | if(s.size()==lm) | ~~~~~~~~^~~~ main.cpp:13:15: warning: unused variable 'nr' [-Wunused-variable] 13 | int lm,ln,nr; | ^~