Compilare: user.cpp: In function ‘void calc()’: user.cpp:24:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(transf[j][s[i]-'a']) dp[i][i][j]=1; ^ user.cpp:24:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(transf[j][s[i]-'a']) dp[i][i][j]=1; ^ user.cpp:24:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(transf[j][s[i]-'a']) dp[i][i][j]=1; ^ user.cpp:24:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(transf[j][s[i]-'a']) dp[i][i][j]=1; ^ user.cpp:29:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=st;k<dr && dp[st][dr][j]==0;++k) { ^ user.cpp:29:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=st;k<dr && dp[st][dr][j]==0;++k) { ^ user.cpp:29:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=st;k<dr && dp[st][dr][j]==0;++k) { ^ user.cpp:30:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(auto it:G[j]) { ^ user.cpp:31:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[st][k][it.first] && dp[k+1][dr][it.second]) { ^ user.cpp:31:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[st][k][it.first] && dp[k+1][dr][it.second]) { ^ user.cpp:31:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[st][k][it.first] && dp[k+1][dr][it.second]) { ^ user.cpp:31:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[st][k][it.first] && dp[k+1][dr][it.second]) { ^ user.cpp:31:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[st][k][it.first] && dp[k+1][dr][it.second]) { ^ user.cpp:32:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[st][dr][j]=1; ^ user.cpp:32:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[st][dr][j]=1; ^ user.cpp:32:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[st][dr][j]=1; ^