foo.cc: In function 'void Input(int (*)[100], int, int)':
foo.cc:7:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |   scanf("%d",&A[i][j]);
      |   ~~~~~^~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:22:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |  scanf("%d %d",&m,&n);
      |  ~~~~~^~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务