foo.c: In function 'main':
foo.c:20:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   20 |  scanf("%d %d",&m,&n);
      |  ^~~~~~~~~~~~~~~~~~~~
foo.c:23:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   23 |   scanf("%d %d",&lft[i],&rgt[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:40:9: warning: 'mia' may be used uninitialized in this function [-Wmaybe-uninitialized]
   40 |   a[mia]=t;
      |   ~~~~~~^~

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