import java.util.Scanner;

public class Main {
	public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	}

	public static void main(String[] args) {
		new Main().run();
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	}

	public static void main(String[] args) {
		new Main().run();
	}
} Main public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	} run {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	} 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 count = 0; count 0 for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		} int i = 0; int i = 0; i 0 i <= a i a i++ i++ i {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		} {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		} if(x < 500 * i) {
				continue;
			} x < 500 * i x 500 * i 500 i {
				continue;
			} continue; for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			} int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			} {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			} int remain = x - (500 * i + 100 * j); remain x - (500 * i + 100 * j) x (500 * i + 100 * j) 500 * i 500 i 100 * j 100 j if(remain < 0) {
					continue;
				} remain < 0 remain 0 {
					continue;
				} continue; if(remain / 50 <= c) {
					count++;
				} remain / 50 <= c remain / 50 remain 50 c {
					count++;
				} count++ count System.out.println(count) System.out.println System.out System System.out count public static void main(String[] args) {
		new Main().run();
	} main {
		new Main().run();
	} new Main().run() new Main().run new Main() String[] args args public class Main {
	public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	}

	public static void main(String[] args) {
		new Main().run();
	}
} public class Main {
	public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	}

	public static void main(String[] args) {
		new Main().run();
	}
} Main
import java.util.Scanner;

public class Main {
	public void run() {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();

		int count = 0;
		for(int i = 0; i <= a; i++) {
			if(x < 500 * i) {
				continue;
			}
			for(int j = 0; j <= b; j++) {
				int remain = x - (500 * i + 100 * j);
				if(remain < 0) {
					continue;
				}
				if(remain / 50 <= c) {
					count++;
				}
			}
		}

		System.out.println(count);
	}

	public static void main(String[] args) {
		new Main().run();
	}
}
