
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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			}
		} int i = 0; int i = 0; i 0 i < a + 1 i a + 1 a 1 i++ i++ i {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			}
		} {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			}
		} for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			} int j = 0; int j = 0; j 0 j < b + 1 j b + 1 b 1 j++ j++ j {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			} {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			} for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				} int k = 0; int k = 0; k 0 k < c + 1 k c + 1 c 1 k++ k++ k {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				} {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				} int tmp = 50 * k + 100 * j + 500 * i; tmp 50 * k + 100 * j + 500 * i 50 * k + 100 * j + 500 * i 50 * k 50 k 100 * j 100 j 500 * i 500 i if(tmp > x)
						break;
					else if(tmp == x)
						ans++; tmp > x tmp x break; if(tmp == x)
						ans++; tmp == x tmp x 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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						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 + 1; i++) {
			for(int j = 0; j < b + 1; j++) {
				for(int k = 0; k < c + 1; k++) {
					int tmp = 50 * k + 100 * j + 500 * i;
					if(tmp > x)
						break;
					else if(tmp == x)
						ans++;
				}
			}
		}
		System.out.println(ans);
	}
}
