foo.cc: In function 'int main()':
foo.cc:6:6: warning: unused variable 'count' [-Wunused-variable]
    6 |  int count = 0;
      |      ^~~~~
foo.cc:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |  scanf("%d%d", &n,&m);
      |  ~~~~~^~~~~~~~~~~~~~~
foo.cc:13:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   13 |    scanf("%d", &s[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~

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