
import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	}
} import java.util.Arrays; Arrays java.util import java.util.Collections; Collections java.util import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	}
} Main public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	} main {

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

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	}
} public class Main {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	}
} Main

import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		int x = scan.nextInt();
		
		int ans = 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) {
						ans++;
					}
				}
			}
		}
		System.out.println(ans);
		
	}
}
