15. 爱吃蟠桃的孙悟空

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});
let arr;
function canfinish(arr, h, k) {
    let ans = 0;
    for(let v of arr) {
        ans += Math.ceil(v/k);
    }
    return ans <= h;
}
rl.on('line', (line) => {
    if(!arr) {
        arr = line.split(' ').map(Number);
    } else {
        let h = parseInt(line);
        if (n === 0 || h===0 || n > h) {
            console.log(0);
            return;
        }
        let left = 1;
        let right = Math.max(...arr);
        while (left < right) {
            let k = Math.floor((left + right) / 2);
            if (canfinish(arr, h, k)) {
                right = mid;
            } else {
                left = mid + 1;
            }
        }
        console.log(left);
    }
});