function main(input) {
  const input_lines = input.split("\n");
  const box_width = parseInt(input_lines[0]);
  // const block_num = parseInt(input_lines[1]);
  let block_width_list = getLineNumArray(input_lines[2]);
  let total_width = 0;
  let total_count = 0;
  block_width_list
    .sort((a, b) => {
      if (a < b) {
        return -1;
      } else if (b > a) {
        return 1;
      } else {
        return 0;
      }
    })
    .forEach(block_width => {
      if (total_width + block_width <= box_width) {
        total_count++;
        total_width += block_width;
      }
    });
  console.log(total_count);
}

function getLineNumArray(line) {
  const line_str_array = line.split(" ");
  let line_array = [];
  line_str_array.forEach(num_str => {
    line_array.push(parseInt(num_str));
  });
  return line_array;
}

main(require("fs").readFileSync("/dev/stdin", "utf8"));
// main(require("fs").readFileSync("./files/yuki.txt", "utf8"));