Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp:17:13: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][0]=max(1,dp[a][0]); ^ main.cpp:17:28: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][0]=max(1,dp[a][0]); ^ main.cpp:22:21: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][1]=max(dp[a][1],dp[c][0]+1); ^ main.cpp:22:34: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][1]=max(dp[a][1],dp[c][0]+1); ^ main.cpp:26:21: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][0]=max(dp[a][0],dp[c][1]+1); ^ main.cpp:26:34: warning: array subscript has type 'char' [-Wchar-subscripts] dp[a][0]=max(dp[a][0],dp[c][1]+1); ^