n=1000;
h=[4,4,8,0,7,8,4,1,9,9,8,8,10,9,1,5,8,3,5,5,3,5,4,1,9,9,4,8,7,9,5,9,2,5,2,7,9,8,0,3,4,7,5,0,3,8,2,10,7,10,9,3,2,7,2,8,1,0,10,5,2,10,6,3,10,6,9,5,2,5,1,5,8,10,4,4,3,2,3,6,8,0,4,2,4,8,8,9,5,4,0,8,10,6,0,7,2,8,4,9,6,6,7,0,1,8,7,9,2,1,0,10,4,9,1,9,7,1,0,3,3,10,8,2,1,5,8,8,8,8,5,6,8,7,7,3,10,8,4,3,6,7,7,1,4,9,3,6,10,0,1,7,6,7,5,0,9,0,9,3,2,9,9,8,6,4,2,2,7,2,0,10,4,3,9,4,2,5,10,0,10,0,6,9,6,3,5,3,9,2,10,3,8,5,4,4,10,5,0,5,0,8,9,9,5,1,0,2,6,0,10,9,8,1,10,7,0,9,8,10,1,4,5,3,7,10,7,7,6,5,2,2,9,4,9,9,10,10,6,8,10,10,7,4,0,7,9,10,2,2,7,1,4,6,0,2,0,10,5,3,4,3,9,9,2,1,3,3,0,3,1,3,0,7,1,2,7,6,3,2,4,0,5,10,9,0,9,7,5,6,4,9,4,3,7,5,1,8,5,10,2,2,0,2,3,8,9,10,5,3,4,5,6,9,4,3,7,10,7,10,9,5,3,9,3,6,10,5,0,3,6,10,9,8,9,8,5,2,7,1,5,6,0,5,10,0,6,1,5,2,9,1,8,0,9,6,9,3,5,10,7,6,10,3,1,2,9,2,0,10,2,4,5,1,1,2,3,9,3,8,3,4,7,7,7,5,10,10,10,4,2,6,4,5,6,1,7,8,8,10,8,0,3,0,1,8,9,1,0,0,10,1,8,4,10,8,1,3,1,2,8,5,3,4,2,10,10,4,9,5,10,0,2,0,8,7,6,8,0,1,1,4,3,1,1,5,10,7,9,2,0,2,8,2,6,8,2,0,1,3,7,7,0,0,9,4,10,10,4,2,5,2,8,10,10,10,9,8,3,9,3,0,8,1,9,3,10,7,3,4,4,7,8,4,3,10,4,4,0,3,6,4,6,9,10,8,2,6,1,4,3,5,3,8,5,8,0,3,5,1,1,3,10,5,3,9,2,2,4,6,6,4,0,1,0,10,8,6,0,1,4,6,6,10,2,5,4,6,1,0,2,5,1,2,1,0,10,1,5,2,6,2,2,5,4,1,8,4,4,2,8,4,0,6,5,3,10,8,3,1,0,0,2,9,10,4,10,2,7,5,2,0,2,9,7,4,7,1,10,9,0,9,6,8,4,4,6,9,8,9,4,9,3,10,1,9,3,8,9,2,0,0,1,2,3,10,8,7,9,7,4,2,7,3,8,0,6,2,4,3,4,2,9,5,10,7,1,5,6,10,10,8,3,9,9,8,4,7,2,8,5,3,3,2,2,3,6,3,3,1,3,6,6,6,3,3,0,5,2,4,7,1,4,2,9,4,7,2,9,7,7,1,7,9,5,7,1,0,1,6,8,5,9,10,8,8,2,1,3,5,5,3,8,2,7,4,2,5,10,8,3,1,10,4,2,10,9,3,2,2,7,10,0,6,4,8,6,9,7,2,4,0,6,1,10,9,8,4,5,4,4,5,6,8,8,0,7,3,4,10,8,10,6,4,1,1,6,6,6,7,3,4,4,8,6,6,4,0,10,5,0,4,2,1,0,9,9,7,3,4,2,4,9,10,10,2,8,5,6,1,4,10,7,9,1,6,7,4,2,0,5,4,4,7,2,7,4,8,9,8,8,3,3,5,5,2,10,0,6,0,1,3,8,0,7,6,3,0,7,6,3,5,7,3,8,2,7,3,3,10,5,0,9,4,6,10,9,8,10,2,9,8,8,0,1,4,0,7,10,8,7,7,10,2,5,0,6,4,1,6,3,8,6,9,7,1,10,6,1,2,1,6,10,8,9,6,2,4,3,0,7,4,4,8,2,3,6,0,2,0,10,7,10,8,8,8,8,6,4,0,2,9,7,3,4,3,9,5,4,4,4,9,7,7,2,2,1,6,8,10,9,7,8,9,10,1,10,4,2,0,0,2,4,3,8,4,2,6,3,9,5,8,1,0,5,1,6,2,0,0,3,2,0,3,9,5,10,4,7,1,8,6,6,1,6,6,8,9,1,6,7,0,0,2,9,9,1,7,10,3];