/in/foo.cc: In function 'int main()':
/in/foo.cc:9:29: warning: iteration 1000008 invokes undefined behavior [-Waggressive-loop-optimizations]
  for(int i=2;i<=N;i++) jc[i]=(jc[i-1]*i);
                        ~~~~~^~~~~~~~~~~~
/in/foo.cc:9:15: note: within this loop
  for(int i=2;i<=N;i++) jc[i]=(jc[i-1]*i);
              ~^~~