题目链接:https://www.luogu.com.cn/problem/P1014
有理数可枚举
In 1873 Cantor proved the rational numbers countable, i.e. they may be placed in one-one correspondence with the natural numbers.
来自...
题目链接:https://www.luogu.com.cn/problem/P1014
有理数可枚举
In 1873 Cantor proved the rational numbers countable, i.e. they may be placed in one-one correspondence with the natural numbers.
来自...
Coidng
#include <iostream>
#include <algorithm>
#include <cstring>
#include <vector>
using namespace std;
const int N = 1e5 + 10;
int q[N];
int f[N], g[N];
int len = 0;
int...
回文数
/*By SilverN*/
#include<algorithm>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>
using namespace std;
int read(){
int x=,f=...