function main(input) {
  const n = parseInt(input[0]);
  const minStep = [];
  
  const q = [{floor:1, step:1}];
  while(q.length > 0) {
    const {floor, step} = q.shift();
    if(floor < 1 || floor > n) continue;
    if(minStep[floor] <= step) continue; 
    minStep[floor] = step;
    const oneBit = countOneBit(floor);
    q.push({floor:(floor+oneBit), step:(step+1)});
    q.push({floor:(floor-oneBit), step:(step+1)});
  }
  if(minStep[n]) {
    console.log(minStep[n]);  
  } else {
    console.log(-1);
  }
}

function countOneBit(i) {
  let count = 0;
  while(i > 0) {
    if((i & 1) === 1) count++;
    i >>= 1;
  }
  return count;
}

main(require("fs").readFileSync("/dev/stdin", "utf8").split("\n"));