結果
| 問題 |
No.849 yuki国の分割統治
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-07-05 22:17:03 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 102 ms / 2,000 ms |
| コード長 | 2,758 bytes |
| コンパイル時間 | 922 ms |
| コンパイル使用メモリ | 129,932 KB |
| 実行使用メモリ | 14,448 KB |
| 最終ジャッジ日時 | 2024-06-22 01:51:49 |
| 合計ジャッジ時間 | 4,722 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 26 |
コンパイルメッセージ
/home/linuxbrew/.linuxbrew/opt/dmd/include/dlang/dmd/std/numeric.d(2999): Warning: cannot inline function `std.numeric.gcdImpl!ulong.gcdImpl`
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.complex, std.container, std.math, std.numeric, 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 floor(long a, long m) {
return a / m - ((a % m < 0) ? 1 : 0);
}
long A, B, C, D;
int N;
long[] X, Y;
void main() {
try {
for (; ; ) {
A = readLong();
B = readLong();
C = readLong();
D = readLong();
N = readInt();
X = new long[N];
Y = new long[N];
foreach (i; 0 .. N) {
X[i] = readLong();
Y[i] = readLong();
}
auto ps = new Tuple!(long, long)[N];
if (A * D == B * C) {
const a = gcd(abs(A), abs(C));
const b = gcd(abs(B), abs(D));
debug {
writeln(a, " ", b);
}
foreach (i; 0 .. N) {
const k = (a != 0) ? floor(X[i], a) : floor(Y[i], b);
ps[i] = tuple(X[i] - k * a, Y[i] - k * b);
}
} else {
/*
((x, y) - k (A, B)) \times (C, D)
= (D x - C y) - (A D - B C) k
*/
if (A * D - B * C < 0) {
C *= -1;
D *= -1;
}
foreach (i; 0 .. N) {
long x = X[i], y = Y[i];
const k = floor(D * x - C * y, A * D - B * C);
x -= k * A;
y -= k * B;
const l = floor(-(B * x - A * y), A * D - B * C);
x -= l * C;
y -= l * D;
debug {
writefln("(%s, %s) -> (%s, %s) -> (%s, %s)", X[i], Y[i], X[i] - k * A, Y[i] - k * B, x, y);
}
ps[i] = tuple(x, y);
}
}
ps.sort;
int ans = 1;
foreach (i; 1 .. N) {
if (ps[i - 1] != ps[i]) {
++ans;
}
}
writeln(ans);
}
} catch (EOFException e) {
}
}