foo.cc: In function 'int main()':
foo.cc:9:13: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
    9 | printf("%I64d",ans);
      |         ~~~~^  ~~~
      |             |  |
      |             |  long long int
      |             int
      |         %I64lld
foo.cc:5:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    5 | scanf("%d%d%d",&n,&m,&k);t=n;
      | ~~~~~^~~~~~~~~~~~~~~~~~~

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