let i = require('fs').readFileSync('/dev/stdin', 'utf8').split('\n')
let a = i[2].split(' ').map((x) => x-0).sort((a,b) => a - b)
let c = 0
for (let e of a) {
  if ((i[0] -= e) < 0) break
  else c++
}
console.log(c)