题解 | #放苹果#

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
    const [m, n] = (await readline()).split(" ").map(n => parseInt(n));
    
    const fn = (m, n) => {
        if (m < 0 || n < 0) {
            return 0;
        } else if (m === 1 || n === 1)  {
            return 1;
        } else {
            return fn(m, n - 1) + fn(m - n, n);
        }
    }
    const results = fn(m, n);
    console.log(results);
}()