Compilare: main.cpp: In function 'void dfs(short int&, short int&)': main.cpp:22:16: warning: array subscript has type 'char' [-Wchar-subscripts] i+=dx[d]; ^ main.cpp:26:16: warning: array subscript has type 'char' [-Wchar-subscripts] i-=dx[d]; ^ main.cpp: In function 'int main()': main.cpp:45:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(short j=1; j<=m; j++) ^~~ main.cpp:50:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout<<nr; ^~~~