A11998 | Relatively Prime Powers
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
Consider some positive integer $x$ . Its prime factorization will be of form $x = 2^{k_1} \cdot 3^{k_2} \cdot 5^{k_3} \cdot \dots$
Let's call $x$ elegant if the greatest common divisor of the sequence $k_1, k_2, \dots$ is equal to $1$ . For example, numbers $5 = 5^1$ , $12 = 2^2 \cdot 3$ , $72 = 2^3 \cdot 3^2$ are elegant and numbers $8 = 2^3$ ( $GCD = 3$ ), $2500 = 2^2 \cdot 5^4$ ( $GCD = 2$ ) are not.
Count the number of elegant integers from $2$ to $n$ .
Each testcase contains several values of $n$ , for each of them you are required to solve the problem separately.
Let's call $x$ elegant if the greatest common divisor of the sequence $k_1, k_2, \dots$ is equal to $1$ . For example, numbers $5 = 5^1$ , $12 = 2^2 \cdot 3$ , $72 = 2^3 \cdot 3^2$ are elegant and numbers $8 = 2^3$ ( $GCD = 3$ ), $2500 = 2^2 \cdot 5^4$ ( $GCD = 2$ ) are not.
Count the number of elegant integers from $2$ to $n$ .
Each testcase contains several values of $n$ , for each of them you are required to solve the problem separately.
输入格式
The first line contains a single integer $T$ ( $1 \le T \le 10^5$ ) — the number of values of $n$ in the testcase.
Each of the next $T$ lines contains a single integer $n_i$ ( $2 \le n_i \le 10^{18}$ ).
Each of the next $T$ lines contains a single integer $n_i$ ( $2 \le n_i \le 10^{18}$ ).
输出格式
Print $T$ lines — the $i$ -th line should contain the number of elegant numbers from $2$ to $n_i$ .
输入输出样例
输入 #1
4 4 2 72 10
输出 #1
2 1 61 6
Here is the list of non-elegant numbers up to $10$ :
- $4 = 2^2, GCD = 2$ ;
- $8 = 2^3, GCD = 3$ ;
- $9 = 3^2, GCD = 2$ .
The rest have $GCD = 1$ .
- $4 = 2^2, GCD = 2$ ;
- $8 = 2^3, GCD = 3$ ;
- $9 = 3^2, GCD = 2$ .
The rest have $GCD = 1$ .
C++ 编辑器
输入
输出
可保存默认模板;新题优先使用已保存模板。
当前快捷键仅展示,暂不支持修改。
- 撤销
Ctrl / ⌘ + Z - 重做
Ctrl / ⌘ + Y - 查找
Ctrl / ⌘ + F - 全选
Ctrl / ⌘ + A - 复制
Ctrl / ⌘ + C - 剪切
Ctrl / ⌘ + X - 粘贴
Ctrl / ⌘ + V - 自动排版
工具栏排版按钮 - 草稿保存
编辑时自动保存到本机
历史
提交记录
状态说明时间源码
AI
作答助手
你好,我是作答助手。可以问思路、复杂度、样例含义或代码报错原因;不会直接给出完整 AC 代码。
确定要清空代码吗?
提交通过
评测结果:Accepted