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