Compilare: main.cpp: In function 'void init()': main.cpp:31:19: warning: array subscript has type 'char' [-Wchar-subscripts] 31 | f[ch] = 1 + f[ch - 1]; | ^~ main.cpp: In function 'int main()': main.cpp:49:53: warning: array subscript has type 'char' [-Wchar-subscripts] 49 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~^ main.cpp:49:67: warning: array subscript has type 'char' [-Wchar-subscripts] 49 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:49:82: warning: array subscript has type 'char' [-Wchar-subscripts] 49 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:49:96: warning: array subscript has type 'char' [-Wchar-subscripts] 49 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:56:50: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^ main.cpp:56:64: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^ main.cpp:56:79: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^ main.cpp:56:89: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~^ main.cpp:62:53: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~^ main.cpp:62:67: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:62:82: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:62:96: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | while (i <= n - 2 && !(f[s[i]] > f[s[i + 1]] && f[s[i + 1]] < f[s[i + 2]])) | ~~~~~~~^ main.cpp:69:50: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^ main.cpp:69:64: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^ main.cpp:69:79: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | if (i <= j && !(f[s[j - 2]] > f[s[j - 1]] && f[s[j - 1]] < f[s[j]])) | ~~~~~~~^