int sieve(int n) {
  var arr = new bool[n];
  for (var i=0; i < n; i=i+1;) { arr[i] = true; }

  arr[0] = false;
  arr[1] = false;

  for(var i = 0; i < n; i=i+1;) {
  if(arr[i]){
      for(var j = i * 2; j < n; j=j+i;){
        arr[j] = false; 
      }
    }
  }

var count = 0;
  for(var i = 0; i < n; i=i+1;){
    if(arr[i]) {
      count = count + 1;
    }
  }

  return count;

}

int program(int argc, string[] argv) {
  var n = 100;
  return sieve(n);
}