Compilare: main.cpp: In function 'int minim(int, int)': main.cpp:26:18: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | frev[a[i]]++; | ^ main.cpp:51:13: warning: unused variable 'h' [-Wunused-variable] 51 | int h=vec.size(); | ^ main.cpp:18:9: warning: unused variable 'pozmax' [-Wunused-variable] 18 | int pozmax=poz2,i,j; | ^~~~~~ main.cpp:84:1: warning: no return statement in function returning non-void [-Wreturn-type] 84 | } | ^ main.cpp: In function 'int main()': main.cpp:94:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | for(i=0;i<b.size();i++) | ~^~~~~~~~~ main.cpp:98:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for(i=0;i<a.size();i++) | ~^~~~~~~~~ main.cpp:126:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | for(i=0;i<b.size();i++) | ~^~~~~~~~~ main.cpp:157:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for(i=0;i<a.size();i++) | ~^~~~~~~~~