题解 | #称砝码#

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 tokens = line.split(' ');
    //     let a = parseInt(tokens[0]);
    //     let b = parseInt(tokens[1]);
    //     console.log(a + b);
    // }
    let num = await readline();
    let weightStr = await readline();
    let countStr = await readline();
    let weights = weightStr.split(" ");
    let counts = countStr.split(" ");

    let fama = [];
    for(let i = 0; i < weights.length; i++) {
        for(let j = 0; j < counts[i]; j++) {
            fama.push(+weights[i])
        }
    }
   
    let set = new Set();
    set.add(0);
    for (const f of fama) {
        let arr = Array.from(set);
        for (const s of arr) {
            set.add(s + f);
        }
        
    }
    console.log(set.size)
})();