Compilare: main.cpp: In function 'int main()': main.cpp:28:9: warning: array subscript has type 'char' [-Wchar-subscripts] 28 | a[ch] ++; | ^~ main.cpp:34:9: warning: array subscript has type 'char' [-Wchar-subscripts] 34 | b[ch] ++; | ^~ main.cpp:75:17: warning: array subscript has type 'char' [-Wchar-subscripts] 75 | if(a[v[j]] > 0 && b[i] > 0){ | ~~~^ main.cpp:78:16: warning: array subscript has type 'char' [-Wchar-subscripts] 78 | a[v[j]] --; | ~~~^ main.cpp:80:24: warning: array subscript has type 'char' [-Wchar-subscripts] 80 | } else if(a[v[j]] > 0 && b[i] == 0){ | ~~~^ main.cpp:85:18: warning: array subscript has type 'char' [-Wchar-subscripts] 85 | a[v[j]] --; | ~~~^ main.cpp:94:24: warning: array subscript has type 'char' [-Wchar-subscripts] 94 | } else if(a[v[j]] == 0 && b[i] > 0){ | ~~~^ main.cpp:100:18: warning: array subscript has type 'char' [-Wchar-subscripts] 100 | c[v[j]] --; | ~~~^ main.cpp:101:18: warning: array subscript has type 'char' [-Wchar-subscripts] 101 | b[v[j]] ++; | ~~~^ main.cpp:105:18: warning: array subscript has type 'char' [-Wchar-subscripts] 105 | c[v[j]] --; | ~~~^ main.cpp:108:24: warning: array subscript has type 'char' [-Wchar-subscripts] 108 | } else if(a[v[j]] == 0 && b[i] == 0){ | ~~~^ main.cpp:114:18: warning: array subscript has type 'char' [-Wchar-subscripts] 114 | c[v[j]] --; | ~~~^ main.cpp:115:18: warning: array subscript has type 'char' [-Wchar-subscripts] 115 | b[v[j]] ++; | ~~~^ main.cpp:119:18: warning: array subscript has type 'char' [-Wchar-subscripts] 119 | c[v[j]] --; | ~~~^ main.cpp:74:13: warning: unused variable 'cost' [-Wunused-variable] 74 | int cost = 0; | ^~~~