結果
| 問題 |
No.194 フィボナッチ数列の理解(1)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-01-10 16:30:07 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 23 ms / 5,000 ms |
| コード長 | 3,129 bytes |
| コンパイル時間 | 1,006 ms |
| コンパイル使用メモリ | 118,788 KB |
| 実行使用メモリ | 18,688 KB |
| 最終ジャッジ日時 | 2024-06-13 02:34:13 |
| 合計ジャッジ時間 | 2,561 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 37 |
ソースコード
import std.conv, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.container, std.math, 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[0]; tokens.popFront; return token; }
int readInt() { return readToken().to!int; }
long readLong() { return readToken().to!long; }
real readReal() { return readToken().to!real; }
void chmin(T)(ref T t, in T f) { if (t > f) t = f; }
void chmax(T)(ref T t, in T f) { if (t < f) t = f; }
int binarySearch(T)(in T[] as, in bool delegate(T) test) { int low = -1, upp = cast(int)(as.length); for (; low + 1 < upp; ) { int mid = (low + upp) >> 1; (test(as[mid]) ? low : upp) = mid; } return upp; }
int lowerBound(T)(in T[] as, in T val) { return as.binarySearch((T a) => (a < val)); }
int upperBound(T)(in T[] as, in T val) { return as.binarySearch((T a) => (a <= val)); }
immutable MO = 10L^^9 + 7;
long solve(long[] coef, long[] initial, long e) {
debug {
writefln("coef = %s", coef);
writefln("initial = %s", initial);
writefln("e = %s", e);
}
const n = cast(int)(coef.length) - 1;
long[] multiply(long[] a, long[] b) {
auto ret = new long[2 * n];
foreach (i; 0 .. n) foreach (j; 0 .. n) {
(ret[i + j] += a[i] * b[j]) %= MO;
}
foreach_reverse (i; n .. 2 * n) {
foreach (k; 1 .. n + 1) {
(ret[i - k] += coef[k] * ret[i]) %= MO;
}
}
ret.length = n;
return ret;
}
auto x = new long[n];
auto y = new long[n];
x[1] = 1;
y[0] = 1;
for (; e; e >>= 1) {
if (e & 1) {
y = multiply(y, x);
}
x = multiply(x, x);
}
long ret;
foreach (i; 0 .. n) {
(ret += y[i] * initial[i]) %= MO;
}
return ret;
}
int N;
long K;
long[] A;
void main() {
try {
for (; ; ) {
N = readInt();
K = readLong();
A = new long[N];
foreach (i; 0 .. N) {
A[i] = readLong();
}
long ansF, ansS;
if (N <= 10^^4 && K <= 10^^6) {
auto f = new long[cast(int)(K + 1)];
auto s = new long[cast(int)(K + 1)];
foreach (i; 1 .. N + 1) {
f[i] = A[i - 1];
s[i] = (s[i - 1] + f[i]) % MO;
}
foreach (i; N + 1 .. cast(int)(K) + 1) {
f[i] = (s[i - 1] - s[i - (N + 1)]) % MO;
s[i] = (s[i - 1] + f[i]) % MO;
}
ansF = f[cast(int)(K)];
ansS = s[cast(int)(K)];
} else {
{
auto coef = new long[N + 1];
coef[1 .. N + 1] = 1;
ansF = solve(coef, A, K - 1);
}
{
auto coef = new long[N + 2];
coef[1] = 2;
coef[N + 1] = -1;
auto ASum = new long[N + 1];
foreach (i; 0 .. N) {
ASum[i + 1] = (ASum[i] + A[i]) % MO;
}
ansS = solve(coef, ASum, K);
}
}
ansF = (ansF % MO + MO) % MO;
ansS = (ansS % MO + MO) % MO;
writeln(ansF, " ", ansS);
}
} catch (EOFException e) {
}
}