题解 | #尼科彻斯定理#

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 mid = line * line;
        let res = []
        let i = 1;
        if (mid % 2 !== 0) {
           res.push(mid)
           i = 2;
        }
        while (res.length < line) {
            res.push(mid - i);
            res.push(mid + i);
            i=i+2;
        }
        console.log(res.sort((a,b)=>a-b).join("+"))
    }
})();