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Q2526.java
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Q2526.java
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package olympiad;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashSet;
import java.util.StringTokenizer;
public class Q2526 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
StringTokenizer st = new StringTokenizer(br.readLine());
int N = Integer.parseInt(st.nextToken());
int P = Integer.parseInt(st.nextToken());
HashSet<Integer> allElem = new HashSet<Integer>();
HashSet<Integer> cycle = new HashSet<Integer>();
int number = N;
while(true){
number = number * N % P;
if(cycle.contains(number))
break;
if(allElem.contains(number))
cycle.add(number);
else
allElem.add(number);
}
bw.write(cycle.size() + "\n");
br.close();
bw.close();
}
}