import java.util.*;
import java.util.stream.Collectors;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} import java.util.*; util.* java import java.util.stream.Collectors; Collectors java.util.stream public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	} 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++) {
					if(i*500 + j*100 + k *50 == 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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		} {
			for(int j=0; j<b+1; j++) {
				for(int k=0; k<c+1; k++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		} for(int j=0; j<b+1; j++) {
				for(int k=0; k<c+1; k++) {
					if(i*500 + j*100 + k *50 == 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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			} {
				for(int k=0; k<c+1; k++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			} for(int k=0; k<c+1; k++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				} int k=0; int k=0; k 0 k<c+1 k c+1 c 1 k++ k++ k {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				} {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				} if(i*500 + j*100 + k *50 == x) {
						ans++;
					} 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 {
						ans++;
					} ans++ ans System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} Main
import java.util.*;
import java.util.stream.Collectors;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(); //500yen
		int b = sc.nextInt(); //100yen
		int c = sc.nextInt(); //50yen
		int x = sc.nextInt(); //all
		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++) {
					if(i*500 + j*100 + k *50 == x) {
						ans++;
					}
				}
			}
		}
		
		System.out.println(ans);
		
		sc.close();
	}
}
