
import java.io.IOException;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

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

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

	}
} Main public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

	} main {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		} 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(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		} {
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		} for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			} int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			} {
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			} for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				} int k = 0; int k = 0; k 0 k <= c k c k++ k++ k {
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				} {
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				} if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					} i*500 + j*100 + k*50 == x i*500 + j*100 + k*50 i*500 + j*100 + k*50 i*500 i 500 j*100 j 100 k*50 k 50 x {
						count++;
						break;
					} count++ count break; System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

	}
} public class Main {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

	}
} Main

import java.io.IOException;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		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++){
			for(int j = 0; j <= b; j++){
				for(int k = 0; k <= c; k++){
					if(i*500 + j*100 + k*50 == x){
						count++;
						break;
					}
				}
			}
		}

		System.out.println(count);

	}
}
