foo.c: In function 'main':
foo.c:19:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   19 |  while (k = 1)
      |         ^
foo.c:4:9: warning: unused variable 'm' [-Wunused-variable]
    4 |  int n, m, a[10000];
      |         ^
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
foo.c:9:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    9 |   scanf("%d", &a[i]);
      |   ^~~~~~~~~~~~~~~~~~

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