代理上youtube,哔嘀影视,打死不同台:冯巩死对头竟然是他
2019-05-21
19:56:15
https://www.cnblogs.com/ecjtuacm-873284962/p/6390028.html
r与r的大小,多种情况进行判断
看题的时候,对数据的严谨性
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define pi 3.1415926 int main() { double n, r, r; while(~scanf("%lf %lf %lf", &n, &r, &r)) { if (r > r) { cout << "no" << endl; continue; } else if(r == r && n == 1) { cout << "yes" << endl; continue; } else if(r > r/2 && n == 1) { cout << "yes" << endl; continue; } else if(r == r/2 && n == 2) { cout << "yes" << endl; continue; } else { double a = pi / asin(r / (r - r)); if (a > n) { cout << "yes"; } else { cout << "no"; } cout << endl; } } return 0; }
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