import java.util.Scanner;

public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	}

} Main public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	} main {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		} int i = 0; int i = 0; i 0 i <= a i a i++ i++ i {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		} {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		} for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			} int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			} {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			} for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				} int k = 0; int k = 0; k 0 k <= c k c k++ k++ k {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				} {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				} if (500 * i + 100 * j + 50 * k == x) cnt++; 500 * i + 100 * j + 50 * k == x 500 * i + 100 * j + 50 * k 500 * i + 100 * j + 50 * k 500 * i 500 i 100 * j 100 j 50 * k 50 k x cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt String... nui nui public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	}

} public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		
		int cnt = 0;
		
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (500 * i + 100 * j + 50 * k == x) cnt++;
				}
			}
		}
		
		System.out.println(cnt);
		
	}

}