Compilare: main.cpp: In function 'int main()': main.cpp:15:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(i=1;i<=s.size()/3;i++) | ~^~~~~~~~~~~~ main.cpp:8:9: warning: variable 'n' set but not used [-Wunused-but-set-variable] 8 | int n,i,j,sol=0,lun=0,poz; | ^ main.cpp:8:13: warning: unused variable 'j' [-Wunused-variable] 8 | int n,i,j,sol=0,lun=0,poz; | ^