题解 | 数独数组

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});
let n;
rl.on('line', function (line) {
    const tokens = line.split(' ');
    if (n === undefined) {
        n = parseInt(tokens[0])
    } else {
        let c = new Array(9).fill(0)
        for (const i of tokens) c[i - 1]++
        const min = Math.min(...c)
        c = c.map(e => e - min)
        console.log(c.every(e => e <= 1) ? 'YES' : 'NO')
    }
});