">#include<iostream> using namespace std; int CountNodes(int m,int n){ if(m > n){ //递归出口 return 0; } return CountNodes(2 * m,n) + CountNodes(2 * m + 1,n) + 1; } //特殊二叉树 int main(){ int m,n; while(scanf("%d%d",&m,&n) != EOF){ printf("%d\n",CountNodes(m,n)); } retur...