let amaou_status = ["akai", "marui", "okii", "umai"]

let n = Int(readLine()!)!
var ans = 0

for _ in 0..<n {
  let s = readLine()!.split(separator: " ").map { String($0) }
  if amaou_status.allSatisfy({ s.contains($0) }) {
    ans += 1
  }
}

print(ans)