#include void main(void){ int n = 0; scanf("%d" , &n); int satisfactionLevel[n]; for(int i = 0 ; i < n ; i ++){ scanf("%d" , &satisfactionLevel[i]); } int target = 0 , count = 0; for(int i = 0 ; i < n ; i ++){ scanf("%d" , &target); if(satisfactionLevel[i] <= target){ count++; } } printf("%d" , count); }