foo.cc: In function 'int main()':
foo.cc:6:18: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long long int' [-Wformat=]
    6 |         printf("%u",(n<<16)+(n>>16));
      |                 ~^  ~~~~~~~~~~~~~~~
      |                  |         |
      |                  |         long long int
      |                  unsigned int
      |                 %llu

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