/in/foo.cc: In function 'int main()':
/in/foo.cc:52:18: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
      t|=(1<<(i*5)+j);
             ~~~~~^~
/in/foo.cc:52:7: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
      t|=(1<<(i*5)+j);
      ~^~~~~~~~~~~~~~