static object Solve() { var(R, G, B, K) = Read4(); var(X, Y, Z) = Read3(); var mc = new MCombination(R + G + B); var rs = new long[R + 1]; var gs = new long[G + 1]; var bs = new long[B + 1]; for (int r = K - Y; r <= R; r++) { rs[r] = mc.MNcr(R, r); } for (int g = K - Z; g <= G; g++) { gs[g] = mc.MNcr(G, g); } for (int b = K - X; b <= B; b++) { bs[b] = mc.MNcr(B, b); } rs = FNTT.Convolution(rs, gs); rs = FNTT.Convolution(rs, bs); return(rs[K]); }
static void Main() { Console.ReadLine(); var a = ReadL(); var b = ReadL(); var c = FNTT.Convolution(a, b); Console.WriteLine(string.Join(" ", c)); }
static void Main() { var n = int.Parse(Console.ReadLine()); var a = new long[n + 1]; var b = new long[n + 1]; for (int i = 1; i <= n; i++) { var v = Read(); a[i] = v[0]; b[i] = v[1]; } var ab = FNTT.Convolution(a, b); Console.WriteLine(string.Join("\n", ab[1..]));
static void Main() { var h = Console.ReadLine().Split(); char[] sa = h[0].ToCharArray(), sb = h[1].ToCharArray(); var neg_a = sa[0] == '-'; var neg_b = sb[0] == '-'; var neg_ab = neg_a ^ neg_b; var a = Array.ConvertAll(sa, c => (long)(c - '0')); var b = Array.ConvertAll(sb, c => (long)(c - '0')); Array.Reverse(a); Array.Reverse(b); if (neg_a) { Array.Resize(ref a, a.Length - 1); } if (neg_b) { Array.Resize(ref b, b.Length - 1); } var ab = FNTT.Convolution(a, b); for (int i = 0; i < ab.Length - 1; i++) { if (ab[i] < 10) { continue; } ab[i + 1] += ab[i] / 10; ab[i] %= 10; } Console.WriteLine(ToString(ab, neg_ab)); }