"use strict";
// import bigInt from 'big-integer'

const Main = input => {
  input = input.trim().split("\n");
  const num500 = input[0];
  const num100 = input[1];
  const num50 = input[2];
  const target = parseInt(input[3], 10);

  const tries = [];
  let count = 0;

  // 500
  for (let i = 0; i < num500; i++) {
    if (target === (i + 1) * 500) count++;
  }
  // 500, 100
  for (let i = 0; i < num500; i++) {
    for (let j = 0; j < num100; j++) {
      if (target === (i + 1) * 500 + (j + 1) * 100) count++;
    }
  }
  // 500, 100, 50
  for (let i = 0; i < num500; i++) {
    for (let j = 0; j < num100; j++) {
      for (let k = 0; k < num50; k++) {
        if (target === (i + 1) * 500 + (j + 1) * 100 + (k + 1) * 50) count++;
      }
    }
  }
  // 500, 50
  for (let i = 0; i < num500; i++) {
    for (let j = 0; j < num50; j++) {
      if (target === (i + 1) * 500 + (j + 1) * 50) count++;
    }
  }
  // 100
  for (let i = 0; i < num100; i++) {
    if (target === (i + 1) * 100) count++;
  }
  // 100, 50
  for (let i = 0; i < num100; i++) {
    for (let j = 0; j < num50; j++) {
      if (target === (i + 1) * 100 + (j + 1) * 50) count++;
    }
  }
  // 50
  for (let i = 0; i < num50; i++) {
    if (target === (i + 1) * 50) count++;
  }

  console.log(count);
};

Main(require("fs").readFileSync("/dev/stdin", "utf8"));
