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

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int y500c = sc.nextInt(); y500c sc.nextInt() sc.nextInt sc int y100c = sc.nextInt(); y100c sc.nextInt() sc.nextInt sc int y50c = sc.nextInt(); y50c 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<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		} int i=0; int i=0; i 0 i<=y500c i y500c i++ i++ i {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		} {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		} for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			} int j=0; int j=0; j 0 j<=y100c j y100c j++ j++ j {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			} {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			} for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				} int k=0; int k=0; k 0 k<=y50c k y50c k++ k++ k {
					if(500*i + 100*j + 50*k == x)count++;
				} {
					if(500*i + 100*j + 50*k == x)count++;
				} if(500*i + 100*j + 50*k == x)count++; 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 count++ count 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){
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int y500c = sc.nextInt();
		int y100c = sc.nextInt();
		int y50c = sc.nextInt();
		// 文字列の入力
		int x = sc.nextInt();

		int count=0;
		for(int i=0;i<=y500c;i++) {
			for(int j=0;j<=y100c;j++) {
				for(int k=0;k<=y50c;k++) {
					if(500*i + 100*j + 50*k == x)count++;
				}
			}
		}
		System.out.println(count);
	}
}
