/in/foo.cc: In function 'int main()':
/in/foo.cc:22:13: warning: array subscript has type 'char' [-Wchar-subscripts]
   cin>>C1[ch];
             ^
/in/foo.cc:23:13: warning: array subscript has type 'char' [-Wchar-subscripts]
   cin>>C2[ch]; 
             ^
/in/foo.cc:31:34: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=dp[i+1][j-1]+C2[S[i]]+C2[S[j]];
                                  ^
/in/foo.cc:31:43: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=dp[i+1][j-1]+C2[S[i]]+C2[S[j]];
                                           ^
/in/foo.cc:32:45: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=min(dp[i][j],dp[i+1][j]+C1[S[i]]);
                                             ^
/in/foo.cc:33:45: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=min(dp[i][j],dp[i+1][j]+C2[S[i]]);
                                             ^
/in/foo.cc:34:45: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=min(dp[i][j],dp[i][j-1]+C1[S[j]]);
                                             ^
/in/foo.cc:35:45: warning: array subscript has type 'char' [-Wchar-subscripts]
     dp[i][j]=min(dp[i][j],dp[i][j-1]+C2[S[j]]);
                                             ^