题解 | #统计每个月兔子的总数#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void async function () {
    // Write your code here
    while(line = await readline()){
       let n=Number(line)
       function res(n){
        if(n<3){
            return 1
        }else{
            return res(n-1)+res(n-2)
        }
       }
       console.log(res(n))
    }
}()