import java.util.*;

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

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz