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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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 sc.close() sc.close sc int ans = 0; ans 0 for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			}
		} int i = 0; int i = 0; i 0 i <= A i A ++i ++i i {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			}
		} {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			}
		} for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			} int j = 0; int j = 0; j 0 j <= B j B ++j ++j j {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			} {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			} int res = X - (500*i + 100*j); res X - (500*i + 100*j) X (500*i + 100*j) 500*i 500 i 100*j 100 j if(res >= 0 && res / 50 <= C)
					ans++; res >= 0 && res / 50 <= C res >= 0 res 0 res / 50 <= C res / 50 res 50 C 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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					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();
		sc.close();
		
		int ans = 0;
		for(int i = 0;i <= A;++i) {
			for(int j = 0;j <= B;++j) {
				int res = X - (500*i + 100*j);
				if(res >= 0 && res / 50 <= C)
					ans++;
			}
		}
		System.out.println(ans);
	}
}
