const input = require('fs').readFileSync('/dev/stdin', 'utf8');
const [H, N] = input.split('\n')[0].split(/\s/).map(v => Number(v));
const arrH = input.split('\n').slice(1, N).map(v => Number(v)).sort((a, b) => a - b).reverse();
let COUNT = 1;
for (i in arrH) {
  if (arrH[i] <= H) {
    COUNT += Number(i);
    break;
  }
  if (i == arrH.length - 1) {
    COUNT += Number(i) + 1;
  }
}

COUNT = [...String(COUNT)];
switch (COUNT[COUNT.length - 1]) {
  case '1':
    COUNT[COUNT.length - 1] = '1st';
    break;
  case '2':
    COUNT[COUNT.length - 1] = '2nd';
    break;
  case '3':
    COUNT[COUNT.length - 1] = '3rd';
    break;
  default:
    COUNT[COUNT.length - 1] = COUNT[COUNT.length - 1] + 'th';
    break;
}
console.log(COUNT.join(''));