import java.math.BigInteger;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
while (in.hasNext()) {
BigInteger x = in.nextBigInteger();
BigInteger a = in.nextBigInteger();
BigInteger y = in.nextBigInteger();
BigInteger b = in.nextBigInteger();
int re = x.multiply(b).compareTo(y.multiply(a));
if(re==-1)
System.out.println("<");
else if(re==1)
System.out.println(">");
else
System.out.println("=");
}
}
}
数学计算
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
while(in.hasNext()) {
long x = in.nextLong();
long a = in.nextLong();
long y = in.nextLong();
long b = in.nextLong();
long x1 = x/a;
long x2 = x%a; //利用求余跟整数 得到答案
long y1 = y/b;
long y2 = y%b;
long r1 = x2 * b;
long r2 = y2 * a;
if(x1 == y1 && r1 == r2)
System.out.println("=");
else if(x1 < y1 ||(x1 == y1 && r1 < r2)){
System.out.println("<");
}
else {
System.out.println(">");
}
}
}
}