// 将阿拉伯数字转换为罗马数字
function intToRoman(num) {
    if (num < 1) {
        return num;
    }
    const romanNumerals = [
        {limit: 1000000, roman: "M̄"}, // 使用 M̄ 表示 1000000
        {limit: 900000, roman: "C̄M̄"},
        {limit: 500000, roman: "D̄"},
        {limit: 400000, roman: "C̄D̄"},
        {limit: 100000, roman: "C̄"},
        {limit: 90000, roman: "X̄C̄"},
        {limit: 50000, roman: "L̄"},
        {limit: 40000, roman: "X̄L̄"},
        {limit: 10000, roman: "X̄"},
        {limit: 9000, roman: "ĪX̄"},
        {limit: 5000, roman: "V̄"},
        {limit: 4000, roman: "ĪV̄"}, // 使用 ĪV̄ 表示 4000
        {limit: 1000, roman: "M"},
        {limit: 900, roman: "CM"},
        {limit: 500, roman: "D"},
        {limit: 400, roman: "CD"},
        {limit: 100, roman: "C"},
        {limit: 90, roman: "XC"},
        {limit: 50, roman: "L"},
        {limit: 40, roman: "XL"},
        {limit: 10, roman: "X"},
        {limit: 9, roman: "IX"},
        {limit: 5, roman: "V"},
        {limit: 4, roman: "IV"},
        {limit: 1, roman: "I"}
    ];
    let roman = '';
    // 遍历罗马数字数组，将其值减去相应的阿拉伯数字
    for (let i = 0; i < romanNumerals.length; i++) {
        while (num >= romanNumerals[i].limit) {
            roman += romanNumerals[i].roman;
            num -= romanNumerals[i].limit;
        }
    }
    return roman;
}