import java.util.*;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    }  
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    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 = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    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 = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int c = Integer.parseInt(sc.next()); c Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int x = Integer.parseInt(sc.next()); x Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int count = 0; count 0 for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    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(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        } {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        } if(i*500+b*100+c*50 < x) continue; i*500+b*100+c*50 < x i*500+b*100+c*50 i*500+b*100+c*50 i*500 i 500 b*100 b 100 c*50 c 50 x continue; for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    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+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            } {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            } if(i*500+j*100+c*50 < x) continue; i*500+j*100+c*50 < x i*500+j*100+c*50 i*500+j*100+c*50 i*500 i 500 j*100 j 100 c*50 c 50 x continue; for(int k=0; k<=c; k++) {
                    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) {
                        count++;
                        break;
                    }
                } {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        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 = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    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 = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    }  
} Main
import java.util.*;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i=0; i<=a; i++) {
            if(i*500+b*100+c*50 < x) continue;
            for(int j=0; j<=b; j++) {
                if(i*500+j*100+c*50 < x) continue;
                for(int k=0; k<=c; k++) {
                    if(i*500+j*100+k*50 == x) {
                        count++;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    }  
}