public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
} public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
} Main public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    } main {
        final String line = readLine();
        System.out.println(calc(line));
    } final String line = readLine(); line readLine() readLine System.out.println(calc(line)) System.out.println System.out System System.out calc(line) calc line String[] args args protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    } calc {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    } final int[] ints = split(input); ints split(input) split input int a = ints[0]; a ints[0] ints 0 int b = ints[1]; b ints[1] ints 1 int c = ints[2]; c ints[2] ints 2 if (a < b && b < c) {
            return "Yes";
        } a < b && b < c a < b a b b < c b c {
            return "Yes";
        } return "Yes"; "Yes" return "No"; "No" String input input private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    } split {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    } final String[] s0 = s.split(" "); s0 s.split(" ") s.split s " " int[] ints = new int[s0.length]; ints new int[s0.length] s0.length s0 s0.length for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        } int i = 0; int i = 0; i 0 i < s0.length i s0.length s0 s0.length i++ i++ i {
            ints[i] = Integer.parseInt(s0[i]);
        } {
            ints[i] = Integer.parseInt(s0[i]);
        } ints[i] = Integer.parseInt(s0[i]) ints[i] ints i Integer.parseInt(s0[i]) Integer.parseInt Integer s0[i] s0 i return ints; ints String s s private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    } readLine {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    } java.util.Scanner s = null; s null try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        } {
            if (s != null) {
                s.close();
            }
        } if (s != null) {
                s.close();
            } s != null s null {
                s.close();
            } s.close() s.close s {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } s = new java.util.Scanner(System.in) s new java.util.Scanner(System.in) return s.nextLine(); s.nextLine() s.nextLine s public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
} public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
} Main
public class Main {

    public static void main(String[] args) {
        final String line = readLine();
        System.out.println(calc(line));
    }

    protected static String calc(String input) {
        final int[] ints = split(input);

        int a = ints[0];
        int b = ints[1];
        int c = ints[2];

        if (a < b && b < c) {
            return "Yes";
        }

        return "No";
    }

    private static int[] split(String s) {
        final String[] s0 = s.split(" ");
        int[] ints = new int[s0.length];

        for (int i = 0; i < s0.length; i++) {
            ints[i] = Integer.parseInt(s0[i]);
        }

        return ints;
    }

    private static String readLine() {
        java.util.Scanner s = null;
        try {
            s = new java.util.Scanner(System.in);
            return s.nextLine();
        } finally {
            if (s != null) {
                s.close();
            }
        }
    }
}