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  1. import java.io.*;
  2. import java.util.Locale;
  3. import java.util.StringTokenizer;
  4.  
  5. public class TaskA_ok {
  6.     private final InputReader reader;
  7.     private final OutputWriter writer;
  8.  
  9.     public TaskA_ok(InputReader reader, OutputWriter writer) {
  10.         this.reader = reader;
  11.         this.writer = writer;
  12.     }
  13.  
  14.     public static void main(String[] args) {
  15.         InputReader reader = new InputReader(System.in);
  16.         OutputWriter writer = new OutputWriter(System.out);
  17.         new TaskA_ok(reader, writer).run();
  18.         writer.writer.flush();
  19.     }
  20.  
  21.     public void run() {
  22.         long p = reader.nextLong();
  23.         long v1 = reader.nextLong();
  24.         long t1 = reader.nextLong();
  25.         long k1 = reader.nextLong();
  26.         long b1 = reader.nextLong();
  27.         long v2 = reader.nextLong();
  28.         long t2 = reader.nextLong();
  29.         long k2 = reader.nextLong();
  30.         long b2 = reader.nextLong();
  31.  
  32.         long f = 0;
  33.         while (v1 != t1) {
  34.             v1 = (v1 * k1 + b1) % p;
  35.             v2 = (v2 * k2 + b2) % p;
  36.             f++;
  37.             if (f > p + 1) {
  38.                 writer.printf("-1\n");
  39.                 return;
  40.             }
  41.         }
  42.         if (v2 == t2) {
  43.             writer.printf("%d\n", f);
  44.             return;
  45.         }
  46.         long per = 0;
  47.         long pk2 = 1, pb2 = 0;
  48.         while (per == 0 || v1 != t1) {
  49.             v1 = (v1 * k1 + b1) % p;
  50.             pk2 = (pk2 * k2) % p;
  51.             pb2 = (pb2 * k2 + b2) % p;
  52.             per++;
  53.             if (per > p + 1) {
  54.                 writer.printf("%d\n", -1);
  55.                 return;
  56.             }
  57.         }
  58.         long f2 = 0;
  59.         while (v2 != t2) {
  60.             f2++;
  61.             v2 = (pk2 * v2 + pb2) % p;
  62.             if (f2 > p + 1) {
  63.                 writer.printf("-1\n");
  64.                 return;
  65.             }
  66.         }
  67.         writer.printf("%d\n", f + per * f2);
  68.     }
  69.  
  70.  
  71.     static class InputReader {
  72.         public BufferedReader reader;
  73.         public StringTokenizer tokenizer;
  74.  
  75.         public InputReader(InputStream stream) {
  76.             reader = new BufferedReader(new InputStreamReader(stream), 32768);
  77.             tokenizer = null;
  78.         }
  79.  
  80.         public String next() {
  81.             while (tokenizer == null || !tokenizer.hasMoreTokens()) {
  82.                 try {
  83.                     tokenizer = new StringTokenizer(reader.readLine());
  84.                 } catch (IOException e) {
  85.                     throw new RuntimeException(e);
  86.                 }
  87.             }
  88.             return tokenizer.nextToken();
  89.         }
  90.  
  91.         public int nextInt() {
  92.             return Integer.parseInt(next());
  93.         }
  94.  
  95.         public double nextDouble() {
  96.             return Double.parseDouble(next());
  97.         }
  98.  
  99.         public long nextLong() {
  100.             return Long.parseLong(next());
  101.         }
  102.     }
  103.  
  104.     static class OutputWriter {
  105.         public PrintWriter writer;
  106.  
  107.         OutputWriter(OutputStream stream) {
  108.             writer = new PrintWriter(stream);
  109.         }
  110.  
  111.         public void printf(String format, Object... args) {
  112.             writer.print(String.format(Locale.ENGLISH, format, args));
  113.         }
  114.     }
  115. }
  116.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
Main.java:5: error: class TaskA_ok is public, should be declared in a file named TaskA_ok.java
public class TaskA_ok {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/4PxOgM
language:
Java (12.0.1)
created:
8 years ago
visibility:
secret

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