foo.cc: In function 'int main()':
foo.cc:15:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=]
   15 |         scanf("%d",v[i]);
      |                ~^  ~~~~
      |                 |     |
      |                 int*  int
foo.cc:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   13 |     scanf("%d%d",&m,&n);
      |     ~~~~~^~~~~~~~~~~~~~
foo.cc:15:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |         scanf("%d",v[i]);
      |         ~~~~~^~~~~~~~~~~

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Found 10 testcases.
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