import java.util.*;
import java.lang.*;
import java.io.*;
class Main {
Scanner scanner
= new Scanner
(System.
in); int a = scanner.nextInt();
int b = scanner.nextInt();
int c = scanner.nextInt();
int result;
/*if (a == b && b == c && a == c) {
System.out.print(1);
}
else if (a == b || b == c || a == c) {
System.out.print(2);
}
else {
System.out.print(3);
}*/
result = (a == b && b == c && a == c) ? 1 : (a == b || b == c || a == c) ? 2 : 3;
}
}
}
}
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