結果
問題 | No.503 配列コレクション |
ユーザー | 👑 hos.lyric |
提出日時 | 2019-04-24 09:03:57 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 203 ms / 2,000 ms |
コード長 | 3,097 bytes |
コンパイル時間 | 770 ms |
コンパイル使用メモリ | 120,792 KB |
実行使用メモリ | 77,052 KB |
最終ジャッジ日時 | 2024-06-22 00:52:43 |
合計ジャッジ時間 | 6,266 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 158 ms
77,052 KB |
testcase_01 | AC | 171 ms
75,756 KB |
testcase_02 | AC | 162 ms
75,220 KB |
testcase_03 | AC | 164 ms
75,880 KB |
testcase_04 | AC | 178 ms
76,044 KB |
testcase_05 | AC | 171 ms
75,776 KB |
testcase_06 | AC | 161 ms
74,400 KB |
testcase_07 | AC | 173 ms
75,892 KB |
testcase_08 | AC | 182 ms
74,992 KB |
testcase_09 | AC | 154 ms
75,512 KB |
testcase_10 | AC | 170 ms
75,372 KB |
testcase_11 | AC | 187 ms
76,184 KB |
testcase_12 | AC | 158 ms
76,004 KB |
testcase_13 | AC | 147 ms
76,104 KB |
testcase_14 | AC | 203 ms
75,604 KB |
testcase_15 | AC | 168 ms
75,808 KB |
testcase_16 | AC | 163 ms
74,872 KB |
testcase_17 | AC | 167 ms
75,892 KB |
testcase_18 | AC | 177 ms
75,748 KB |
testcase_19 | AC | 203 ms
76,364 KB |
testcase_20 | AC | 181 ms
74,584 KB |
testcase_21 | AC | 171 ms
74,704 KB |
testcase_22 | AC | 171 ms
76,768 KB |
testcase_23 | AC | 179 ms
75,180 KB |
testcase_24 | AC | 180 ms
75,700 KB |
ソースコード
import std.conv, std.functional, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.complex, std.container, std.math, std.numeric, std.range, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } enum MO = 10L^^9 + 7; enum LIM = 3 * 10^^6; long[] inv, fac, invFac; void prepare() { inv = new long[LIM]; fac = new long[LIM]; invFac = new long[LIM]; inv[1] = 1; foreach (i; 2 .. LIM) { inv[i] = MO - ((MO / i) * inv[cast(size_t)(MO % i)]) % MO; } fac[0] = invFac[0] = 1; foreach (i; 1 .. LIM) { fac[i] = (fac[i - 1] * i) % MO; invFac[i] = (invFac[i - 1] * inv[i]) % MO; } } long binom(long n, long k) { if (0 <= k && k <= n) { assert(n < LIM); return fac[cast(size_t)(n)] * invFac[cast(size_t)(k)] % MO * invFac[cast(size_t)(n - k)] % MO; } else { return 0; } } int N, K, D; void main() { /* debug { foreach (n; 2 .. 12) foreach (k; 2 .. n + 1) { int prod = 1; for (int m = n; m >= k; m -= (k - 1)) { prod *= (m - k + 1); } int[][] as; foreach (p; 0 .. prod) { int pp = p; auto a = new int[n]; for (int m = n; m >= k; m -= (k - 1)) { const i = p % (m - k + 1); p /= (m - k + 1); a = a[0 .. i] ~ (a[i .. i + k].sum + 1) ~ a[i + k .. $]; } as ~= a; } as = as.sort.uniq.array; writeln("n = ", n, ", k = ", k); foreach (a; as) { writeln(a); } } } */ prepare(); try { for (; ; ) { N = readInt(); K = readInt(); D = readInt(); int L, M; for (M = N; M >= K; M -= (K - 1)) { ++L; } debug { writeln("L = ", L, ", M = ", M); } long ans; if (D == 1) { ans = M; } else { long dl = 1; foreach (l; 0 .. L + 1) { // H(M - 1, L - l) long tmp = (L - l == 0) ? 1 : binom((M - 1) + (L - l) - 1, L - l); ans += tmp * dl; ans %= MO; dl *= D; dl %= MO; } ans *= M; ans %= MO; } writeln(ans); } } catch (EOFException e) { } }