/in/foo.cc: In function 'void work()':
/in/foo.cc:44:11: warning: iteration 25 invokes undefined behavior [-Waggressive-loop-optimizations]
   dp[i][0]=1;
   ~~~~~~~~^~
/in/foo.cc:42:15: note: within this loop
  for(int i=0;i<=25;i++)
              ~^~~~