/in/foo.cc: In function 'int main()':
/in/foo.cc:36:22: warning: array subscript is above array bounds [-Warray-bounds]
  if (ans==dp[400][400][0]) cout<<"Impossible";
           ~~~~~~~~~~~^
/in/foo.cc:36:17: warning: array subscript is above array bounds [-Warray-bounds]
  if (ans==dp[400][400][0]) cout<<"Impossible";
           ~~~~~~^