結果
問題 | No.321 (P,Q)-サンタと街の子供たち |
ユーザー |
|
提出日時 | 2015-12-15 00:13:43 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 320 ms / 2,000 ms |
コード長 | 2,538 bytes |
コンパイル時間 | 3,149 ms |
コンパイル使用メモリ | 78,840 KB |
実行使用メモリ | 49,232 KB |
最終ジャッジ日時 | 2024-07-06 22:01:00 |
合計ジャッジ時間 | 12,073 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 41 |
ソースコード
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.PrintStream;import java.io.PrintWriter;import java.util.Arrays;import java.util.Iterator;public class Main_yukicoder321_1 {public static void main(String[] args) {Scanner sc = new Scanner(System.in);Printer pr = new Printer(System.out);int p = sc.nextInt();int q = sc.nextInt();if (p < q) {int tmp = p;p = q;q = tmp;}int n = sc.nextInt();int ret = 0;for (int i = 0; i < n; i++) {int x = Math.abs(sc.nextInt());int y = Math.abs(sc.nextInt());if (p == 0) {if (x == 0 && y == 0) {ret++;}} else if (q == 0) {if (x % p == 0 && y % p == 0) {ret++;}} else {int tmp;tmp = gcd(p, q);if (p / tmp % 2 == 0 || q / tmp % 2 == 0) {if (x % tmp == 0 && y % tmp == 0) {ret++;}} else {if ((x % (2 * tmp) == 0 && y % (2 * tmp) == 0) || ((x + y) % (2 * tmp) == 0 && (x - y) % (2 * tmp) == 0)) {ret++;}}}}pr.println(ret);pr.close();sc.close();}private static int gcd(int n, int m) {if (m == 0) {return n;} else {return gcd(m, n % m);}}@SuppressWarnings("unused")private static class Scanner {BufferedReader br;Iterator<String> it;Scanner (InputStream in) {br = new BufferedReader(new InputStreamReader(in));}String next() throws RuntimeException {try {if (it == null || !it.hasNext()) {it = Arrays.asList(br.readLine().split(" ")).iterator();}return it.next();} catch (IOException e) {throw new IllegalStateException();}}int nextInt() throws RuntimeException {return Integer.parseInt(next());}long nextLong() throws RuntimeException {return Long.parseLong(next());}float nextFloat() throws RuntimeException {return Float.parseFloat(next());}double nextDouble() throws RuntimeException {return Double.parseDouble(next());}void close() {try {br.close();} catch (IOException e) {// throw new IllegalStateException();}}}private static class Printer extends PrintWriter {Printer(PrintStream out) {super(out);}}}