[Link] https://AtCoder.jp/contests/typical90/tasks/typical90_t
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import java.util.*;
import java.io.*;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String[] line = br.readLine().split(" ");
long a = atol(line[0]), b = atol(line[1]), c = atol(line[2]);
System.out.println(a < pow(c, b) ? "Yes" : "No");
}
public static long pow(int base, int exp) {
long l = 1;
for(int i = 0; i < exp; i++) l *= base;
return l;
}
public static long atol(String s) { return Long.parseLong(s); }
}