题解 | #表达式求值#

//属于是直接用方法了捂脸

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
    let str;
    while(line = await readline()){
        str=line;
    }
    console.log(eval(str))
}()