/in/foo.cc: In function 'int main()':
/in/foo.cc:46:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while(l3>1&&ans[l3]==0) l3--; printf("%d",ans[l3]);
  ^~~~~
/in/foo.cc:46:32: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while(l3>1&&ans[l3]==0) l3--; printf("%d",ans[l3]);
                                ^~~~~~