Compilare: main.cpp: In function 'int main()': main.cpp:18:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(i=1;i<b.size();i++) cnt[0][i]=1; | ~^~~~~~~~~ main.cpp:19:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(i=1;i<a.size();i++) cnt[i][0]=1; | ~^~~~~~~~~ main.cpp:20:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(i=1;i<a.size();i++){ | ~^~~~~~~~~ main.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(j=1;j<b.size();j++){ | ~^~~~~~~~~ main.cpp:13:13: warning: unused variable 'rasp' [-Wunused-variable] 13 | int i,j,rasp=0,max1=0; | ^~~~ main.cpp:13:20: warning: unused variable 'max1' [-Wunused-variable] 13 | int i,j,rasp=0,max1=0; | ^~~~