

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class Main{

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int n=sc.nextInt();
		boolean[] aa = new boolean[201];
		for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			}
		int cnt=0;
		for(int i=1;i<=n;i+=2)if(aa[i])cnt++;
		System.out.println(cnt);
	}
	static boolean printDivisors(int n)
    {
		int cnt=0;
        for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++;
        return cnt==8;
    }

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.StringTokenizer; StringTokenizer java.util class Main{

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int n=sc.nextInt();
		boolean[] aa = new boolean[201];
		for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			}
		int cnt=0;
		for(int i=1;i<=n;i+=2)if(aa[i])cnt++;
		System.out.println(cnt);
	}
	static boolean printDivisors(int n)
    {
		int cnt=0;
        for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++;
        return cnt==8;
    }

} Main public static void main(String[] args) {
		FastReader sc = new FastReader();
		int n=sc.nextInt();
		boolean[] aa = new boolean[201];
		for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			}
		int cnt=0;
		for(int i=1;i<=n;i+=2)if(aa[i])cnt++;
		System.out.println(cnt);
	} main {
		FastReader sc = new FastReader();
		int n=sc.nextInt();
		boolean[] aa = new boolean[201];
		for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			}
		int cnt=0;
		for(int i=1;i<=n;i+=2)if(aa[i])cnt++;
		System.out.println(cnt);
	} FastReader sc = new FastReader(); sc new FastReader() int n=sc.nextInt(); n sc.nextInt() sc.nextInt sc boolean[] aa = new boolean[201]; aa new boolean[201] 201 for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			} int i=0; int i=0; i 0 i<201 i 201 i++ i++ i {
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			} {
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			} aa[i]=printDivisors(i) aa[i] aa i printDivisors(i) printDivisors i int cnt=0; cnt 0 for(int i=1;i<=n;i+=2)if(aa[i])cnt++; int i=1; int i=1; i 1 i<=n i n i+=2 i+=2 i 2 if(aa[i])cnt++; if(aa[i])cnt++; aa[i] aa i cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt String[] args args static boolean printDivisors(int n)
    {
		int cnt=0;
        for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++;
        return cnt==8;
    } printDivisors {
		int cnt=0;
        for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++;
        return cnt==8;
    } int cnt=0; cnt 0 for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++; int i=1; int i=1; i 1 i<=n i n i++ i++ i if (n%i==0)
                cnt++; if (n%i==0)
                cnt++; n%i==0 n%i n i 0 cnt++ cnt return cnt==8; cnt==8 cnt 8 int n n static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	} FastReader BufferedReader br; br StringTokenizer st; st public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		} FastReader {
			br = new BufferedReader(new InputStreamReader(System.in));
		} br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		} next {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		} while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			} st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			} try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				} catch (IOException e) {
					e.printStackTrace();
				} IOException e {
					e.printStackTrace();
				} e.printStackTrace() e.printStackTrace e {
					st = new StringTokenizer(br.readLine());
				} st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
			return Integer.parseInt(next());
		} nextInt {
			return Integer.parseInt(next());
		} return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
			return Long.parseLong(next());
		} nextLong {
			return Long.parseLong(next());
		} return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() {
			return Double.parseDouble(next());
		} nextDouble {
			return Double.parseDouble(next());
		} return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		} nextLine {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		} String str = ""; str "" try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			} IOException e {
				e.printStackTrace();
			} e.printStackTrace() e.printStackTrace e {
				str = br.readLine();
			} str = br.readLine() str br.readLine() br.readLine br return str; str


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class Main{

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int n=sc.nextInt();
		boolean[] aa = new boolean[201];
		for(int i=0;i<201;i++){
			aa[i]=printDivisors(i);
//			System.out.println(aa[i]+" "+i);
			}
		int cnt=0;
		for(int i=1;i<=n;i+=2)if(aa[i])cnt++;
		System.out.println(cnt);
	}
	static boolean printDivisors(int n)
    {
		int cnt=0;
        for (int i=1;i<=n;i++)
            if (n%i==0)
                cnt++;
        return cnt==8;
    }

}
