bettle_king的博客

https://codeforces.com/problemset/problem/514/B就是求每个点和我们的点的斜率，求有多少个不同的斜率即可。#include<bits/stdc++.h>using namespace std;typedef pair<int,int> PII;map<PII,int>mp;int n,x,y,a,b;int gcd(int a,int b) {return b?gcd(b,a%b):a;}int main(vo.

http://acm.hdu.edu.cn/showproblem.php?pid=7127#include<bits/stdc++.h>using namespace std;#define int long longsigned main(){ int T; cin>>T; while(T--) { int a,b,c; cin>>a>>b>>c; int x.

https://codeforces.com/problemset/problem/1199/B#include<bits/stdc++.h>using namespace std;int main(void){ double h,l; cin>>h>>l; printf("%.13lf",(l*l-h*h)/2/h); return 0;}