题解 | #统计每个月兔子的总数#

let num 
while(num = parseInt(readline())){
// dp[i] 表示第 i 月的兔子总数
  let dp = new Array(num + 1).fill(0)
  dp[1] = 1
  dp[2] = 1
  dp[3] = 2
  for(let i = 4; i <= num; i++){
    dp[i] = dp[i - 1] + dp[i - 2]
  }
  print(dp[num])
}