Compilare: main.cpp: In function 'void dfs(short int, short int)': main.cpp:23:24: warning: array subscript has type 'char' [-Wchar-subscripts] short nx=i+dx[d]; ^ main.cpp:25:21: warning: array subscript has type 'char' [-Wchar-subscripts] if(fr[i+dx[d]][j+dx[(d+1)%4]]==0&&i+dx[d]&&j+dx[(d+1)%4]&&i+dx[d]<=n&&j+dx[(d+1)%4]<=m) ^ main.cpp:25:49: warning: array subscript has type 'char' [-Wchar-subscripts] if(fr[i+dx[d]][j+dx[(d+1)%4]]==0&&i+dx[d]&&j+dx[(d+1)%4]&&i+dx[d]<=n&&j+dx[(d+1)%4]<=m) ^ main.cpp:25:73: warning: array subscript has type 'char' [-Wchar-subscripts] if(fr[i+dx[d]][j+dx[(d+1)%4]]==0&&i+dx[d]&&j+dx[(d+1)%4]&&i+dx[d]<=n&&j+dx[(d+1)%4]<=m) ^ main.cpp:26:23: warning: array subscript has type 'char' [-Wchar-subscripts] dfs(i+dx[d],j+dx[(d+1)%4]); ^ main.cpp:23:15: warning: unused variable 'nx' [-Wunused-variable] short nx=i+dx[d]; ^~ main.cpp:24:15: warning: unused variable 'ny' [-Wunused-variable] short ny=j+dx[(d+1)%4]; ^~ main.cpp: In function 'int main()': main.cpp:44:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int j=1; j<=m; j++) ^~~ main.cpp:49:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout<<nr; ^~~~