#include #include using namespace std; using namespace atcoder; using lint = long long; using ulint = unsigned long long; #define endl '\n' int const INF = 1<<30; lint const INF64 = 1LL<<61; // lint const mod = 1e9+7; // using mint = modint1000000007; long const mod = 998244353; using mint = modint998244353; lint ceilDiv(lint x, lint y){if(x >= 0){return (x+y-1)/y;}else{return x/y;}} lint floorDiv(lint x, lint y){if(x >= 0){return x/y;}else{return (x-y+1)/y;}} lint Sqrt(lint x){lint upper = 1e9;lint lower = 0;while(upper - lower > 0){lint mid = (1+upper + lower)/2;if(mid * mid > x){upper = mid-1;}else{lower = mid;}}return upper;} lint gcd(lint a,lint b){if(a&v){lint ans = INF64;for(lint i:v){ans = min(ans, i);}return ans;} lint chmax(vector&v){lint ans = -INF64;for(lint i:v){ans = max(ans, i);}return ans;} double dist(double x1, double y1, double x2, double y2){return sqrt(pow(x1-x2, 2) + pow(y1-y2,2));} string toString(lint n){string ans = "";if(n == 0){ans += "0";}else{while(n > 0){int a = n%10;char b = '0' + a;string c = "";c += b;n /= 10;ans = c + ans;}}return ans;} string toString(lint n, lint k){string ans = toString(n);string tmp = "";while(ans.length() + tmp.length() < k){tmp += "0";}return tmp + ans;} vectorprime;void makePrime(lint n){prime.push_back(2);for(lint i=3;i<=n;i+=2){bool chk = true;for(lint j=0;j>; int main(){ double r; int k; cin >> r >> k; double PI = 3.14159265358979; vecans; if(k % 2 == 1)ans.pb(0); for(int i = 1; i*2 <= k; i++) { double S = PI*r*r; double upper = r; double lower = 0; while(upper - lower > 1e-7) { double m = (upper + lower) / 2.0; double theta = acos(m / r); double T = theta*r*r - m*r*sin(theta); // cerr << m << " " << S << " " << T << endl; if(S*i/(double)(k+1) > T) { upper = m; } else { lower = m; } } ans.pb(upper); ans.pb(-upper); } sort(all(ans)); for(auto t: ans) printf("%.10lf\n", t); }