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 sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	}

} 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 sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	}

} 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 sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		int sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						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 sum = 0; sum 0 int count = 0; count 0 for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		} int i = 0; int i = 0; i 0 i <= a i a i++ i++ i {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		} {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		} for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			} int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			} {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			} for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				} int j2 = 0; int j2 = 0; j2 0 j2 <= c j2 c j2++ j2++ j2 {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				} {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				} sum = (500 * i) + (100 * j) + (50 * j2) sum (500 * i) + (100 * j) + (50 * j2) (500 * i) + (100 * j) + (50 * j2) (500 * i) 500 i (100 * j) 100 j (50 * j2) 50 j2 if(x == sum) {
						count ++;
					} x == sum x sum {
						count ++;
					} 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 a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int x = sc.nextInt();
		int sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	}

} 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 sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	}

} 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 sum = 0;
		int count = 0;
		
		for (int i = 0; i <= a; i++) {
			
			for (int j = 0; j <= b; j++) {
				
				for (int j2 = 0; j2 <= c; j2++) {
					sum = (500 * i) + (100 * j) + (50 * j2);
					
					if(x == sum) {
						count ++;
					}
					
				}
				
			}
			
		}
		
		System.out.println(count);
	}

}