foo.cc: In function 'int main()':
foo.cc:10:5: warning: statement has no effect [-Wunused-value]
   10 |  max>>t;
      |  ~~~^~~
foo.cc:19:8: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
   19 |  cout<<max;
      |        ^~~

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