Compilare: main.cpp: In function 'int cmp(int, int)': main.cpp:20:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | while(st<a.size()) | ~~^~~~~~~~~ main.cpp:22:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | while(a[st]!=b[dr] && dr<b.size()) | ~~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:15: warning: unused variable 'k' [-Wunused-variable] 37 | int n,i,j,k,l,cer,cnt; | ^ main.cpp:37:17: warning: unused variable 'l' [-Wunused-variable] 37 | int n,i,j,k,l,cer,cnt; | ^