/in/foo.cc: In function 'int main()':
/in/foo.cc:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=100000;i<=v.size();i++)
               ~^~~~~~~~~~
/in/foo.cc:9:16: warning: unused variable 'k' [-Wunused-variable]
  int a[100000],k=0;
                ^