foo.cc: In function 'int main()':
foo.cc:16:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 | scanf("%d",&n);
      | ~~~~~^~~~~~~~~
foo.cc:18:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 | scanf("%d",&a[i].t);
      | ~~~~~^~~~~~~~~~~~~~
foo.cc:21:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 | scanf("%d",&a[i].m);
      | ~~~~~^~~~~~~~~~~~~~

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