// AOT-safe microbench: call String.length() many times (heavy)
static box Main {
  len1(s) { return s.length() }
  main() {
    local s = new StringBox("nyash")
    local i = 0
    local total = 0
    // ~160k iterations（重めだが実用時間内）
    loop(i < 160000) {
      total = total + me.len1(s)
      i = i + 1
    }
    return total
  }
}