foo.cc: In function 'int main()':
foo.cc:9:19: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    9 |       printf("%I64d",(long long)m*(long long)m+(long long)n*(long long)n);
      |               ~~~~^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                   |                           |
      |                   int                         long long int
      |               %I64lld
foo.cc:4:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    4 |         scanf("%d",&k);
      |         ~~~~~^~~~~~~~~

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