#include <cmath>#include <cstdio>using namespace std;int main() {int n;double z;while (scanf("%d%lf", &n, &z) != EOF) {printf("%.6len", yn(n, z));}return 0;}
#include <cmath>#include <cstdio>using namespace std;int main() {int n;double z;while (scanf("%d%lf", &n, &z) != EOF) {printf("%.6len", yn(n, z));}return 0;}名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
