各位前輩好，本人在做leetcode 179時碰到以下問題：

先放上可以被accept的解答：

class Solution {
public:
    static bool comp(const int& A, const int& B) {
        string a = to_string(A), b = to_string(B);
        return a+b > b+a; 
    }
    string largestNumber(vector<int>& nums) {
        sort(nums.begin(), nums.end(), comp);
        string res = "";
        if (nums[0] == 0) return "0";

        for (int num:nums) {
            res += to_string(num);
        }
        return res;
    }
};

但我如果用在comp裡用stoll()的話就會出現奇怪的問題 (加上cout來debug)：

class Solution {
public:
    static bool comp(const int& A, const int& B) {
        cout << "A: " << A << " B: " << B << endl;  // Print the actual values
        string a = to_string(A), b = to_string(B);
        cout << "Concatenated: " << a + b << " vs " << b + a << endl;
        return stoll(a + b) >= stoll(b + a);
    }
    string largestNumber(vector<int>& nums) {
        sort(nums.begin(), nums.end(), comp);
        string res = "";
        if (nums[0] == 0) return "0";

        for (int num:nums) {
            res += to_string(num);
        }

        return res;
    }
};

跑這個testcase:
nums = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]

會跳出 heap-buffer-overflow 的錯誤，且印出

(省略前面)
A: 0 B: 0
Concatenated: 00 vs 00
A: -1094795586 B: 0
Concatenated: -10947955860 vs 0-1094795586
A: 0 B: 0
Concatenated: 00 vs 00
(省略後面)

這個 -1094795586 明顯是 garbage value，不知從何而來，麻煩c++高手提點，謝謝!