foo.cc: In function 'int main()':
foo.cc:78:16: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 2 has type 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   78 |     printf("%llu\n",MM.size());
      |             ~~~^    ~~~~~~~~~
      |                |           |
      |                |           std::vector<long long int>::size_type {aka long unsigned int}
      |                long long unsigned int
      |             %lu
foo.cc:58:10: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   58 |     fread(Buf,1,1<<24,stdin);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~

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