import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	} 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 ans = 0; ans 0 for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		} int i = 0; int i = 0; i 0 i <= A i A i++ i++ i {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		} {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		} for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			} int j = 0; int j = 0; j 0 j <= B j B j++ j++ j {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			} {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			} int tmp = X - i*500 - j*100; tmp X - i*500 - j*100 X - i*500 - j*100 X i*500 i 500 j*100 j 100 if (0 <= tmp && tmp <= C*50) {
						ans++;
				} 0 <= tmp && tmp <= C*50 0 <= tmp 0 tmp tmp <= C*50 tmp C*50 C 50 {
						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 sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int ans = 0;

		for(int i = 0; i <= A; i++) {
			for(int j = 0; j <= B; j++) {
			  int tmp = X - i*500 - j*100;
				if (0 <= tmp && tmp <= C*50) {
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
}
