foo.c: In function 'main':
foo.c:46:21: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
             scanf("%d",&data[j][i]);
                    ~^  ~~~~~~~~~~~
                    %hhd
foo.c:40:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ^~~~~~~~~~~~~~
foo.c:46:13: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&data[j][i]);
             ^~~~~~~~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务