Compilare: main.cpp: In function 'int solve(std::string, std::string, int)': main.cpp:16:13: warning: array subscript has type 'char' [-Wchar-subscripts] 16 | vft[i] ++; | ^ main.cpp:19:13: warning: array subscript has type 'char' [-Wchar-subscripts] 19 | vfs[i] ++; | ^ main.cpp:22:19: warning: iteration 255 invokes undefined behavior [-Waggressive-loop-optimizations] 22 | if ( vfs[i] != vft[i] ) sol++; | ~~~~~^ main.cpp:21:24: note: within this loop 21 | for ( int i = 1; i <= 256; ++ i ) { | ~~^~~~~~