foo.cc: In function 'int main()':
foo.cc:24:11: warning: unused variable 'j' [-Wunused-variable]
   int N,i,j=0,count;
           ^
foo.cc:29:13: warning: 'count' is used uninitialized in this function [-Wuninitialized]
   if(count/5==0)
      ~~~~~~~^~~

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