Accepted
foo.cc: In function 'int main()':
foo.cc:4:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    4 |     scanf("%d%d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~
  Found 10 testcases. [Hydro](https://hydro.ac)提供评测服务