結果
| 問題 |
No.575 n! / m / m / m...
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-01-29 08:41:00 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 12 ms / 2,000 ms |
| コード長 | 2,130 bytes |
| コンパイル時間 | 2,655 ms |
| コンパイル使用メモリ | 161,536 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-06-13 03:49:34 |
| 合計ジャッジ時間 | 4,046 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
コンパイルメッセージ
Main.d(59): Deprecation: function `std.math.exponential.log10` is deprecated - `std.math.exponential.log10` called with argument types `(long)` matches both `log10(real)`, `log10(double)`, and `log10(float)`. Cast argument to floating point type instead. Main.d(64): Deprecation: function `std.math.exponential.log10` is deprecated - `std.math.exponential.log10` called with argument types `(long)` matches both `log10(real)`, `log10(double)`, and `log10(float)`. Cast argument to floating point type instead.
ソースコード
import std.conv, std.functional, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, 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)); }
long N, M;
long calc(long p) {
long ret;
long n = N;
for (; (n /= p) > 0; ) {
ret += n;
}
return ret;
}
void main() {
try {
for (; ; ) {
N = readLong();
M = readLong();
long k = N;
long m = M;
for (long d = 2; d * d <= m; ++d) {
if (m % d == 0) {
long e;
do {
m /= d;
++e;
} while (m % d == 0);
chmin(k, calc(d) / e);
}
}
if (m > 1) {
chmin(k, calc(m) / 1);
}
debug {
writeln("k = ", k);
}
real logAns = 0.0;
if (N <= 10^^5) {
foreach (i; 1 .. N + 1) {
logAns += log10(i);
}
} else {
logAns += log10(2.0L * PI * N) / 2.0L + log10(N / E) * N;
}
logAns -= log10(M) * k;
debug {
writeln("logAns = ", logAns);
}
writefln("%.10fe%.f", 10.0L^^(logAns - floor(logAns)), floor(logAns));
}
} catch (EOFException e) {
}
}