Compilare: main.cpp: In function 'void read()': main.cpp:35:38: warning: array subscript has type 'char' [-Wchar-subscripts] dp[0][i] = last[0][word[0][i]] + 1; ^ main.cpp:36:38: warning: array subscript has type 'char' [-Wchar-subscripts] dp[1][i] = last[1][word[1][i]] + 1; ^ main.cpp:37:27: warning: array subscript has type 'char' [-Wchar-subscripts] last[0][word[0][i]] = dp[0][i]; ^ main.cpp:38:27: warning: array subscript has type 'char' [-Wchar-subscripts] last[1][word[1][i]] = dp[1][i]; ^ main.cpp: In function 'void solve(long long int)': main.cpp:68:35: warning: array subscript has type 'char' [-Wchar-subscripts] ans += pairs * (last[0][letter] + last[1][letter]); ^ main.cpp:68:53: warning: array subscript has type 'char' [-Wchar-subscripts] ans += pairs * (last[0][letter] + last[1][letter]); ^ main.cpp:69:47: warning: array subscript has type 'char' [-Wchar-subscripts] ans += remaining * last[kind(full)][letter]; ^