function main(input) {
  const args = input.split('\n');
  const [N, X] = args[0].split(' ');
  const L = args[1].split(' ');
  const n = Number(N);
  let count = 0;
  for (let i = 0; i < n + 1; i++) {
    if (X < count) {
      console.log(i)
      return;
    }
    count += Number(L[i]);
   }
  return; 
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));
