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 long signed 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; }