Compilare: user.cpp: In function ‘int main()’: user.cpp:41:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>> s + 1; ^ user.cpp:51:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] fs[ s[i] ]++; ^ user.cpp:52:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] sums[i] = sums[ lst[ s[i] ] ] + 1; ^ user.cpp:53:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] lst[ s[i] ] = i; ^ user.cpp:59:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fsc[ s[i] ]++; ^ user.cpp:60:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] sumsc[i] = sumsc[ lst[ s[i] ] ] + 1; ^ user.cpp:61:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] lst[ s[i] ] = i; ^ user.cpp:119:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol += fs[x] * 1LL * nr1; ^ user.cpp:120:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol += fsc[x] * 1LL * nr2; ^