public class Solution { public int cutRope(int target) { if (target == 2 || target == 3) return target - 1; int res = 1; while (target > 4) { //如果target大于4，我们不停的让他减去3 target = target - 3; //计算每段的乘积 res = res * 3; } return target * res;

}

}