题解 | 牛牛学数列4
牛牛学数列4
https://www.nowcoder.com/practice/586b114f52034688879342ba45779081
const rl = require("readline").createInterface({ input: process.stdin });
function qhgs(n){
return n*(n+1)/2;
}
rl.on("line", (input) => {
let result = 0;
num = input*1;
for(let i = 1;i<=input;i++){
result += qhgs(i)
}
console.log(result);
rl.close();
});
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