1 print int(‘‘.join(sorted(raw_input().split()[1:], lambda s1, s2: cmp(s1+s2, s2+s1))))

 1 #include <iostream> 2 #include <vector> 3 #include <string> 4 #include <algorithm> 5  6 using namespace std; 7  8 struct Cmp{ 9     bool operator()(const string &s1, const string &s2){10         return (s1 + s2) < (s2 + s1);11     }12 };13 14 int main(){15     int N;16     cin >> N;17     18     vector<string> nums(N);19     for (int i = 0; i < N; i++)20         cin >> nums[i];21 22     sort(nums.begin(), nums.end(), Cmp());23 24     string res;25     for (int i = 0; i < nums.size(); i++)26         res += nums[i];27 28     while (res[0] == ‘0‘)29         res = res.substr(1, res.size() - 1);30     if (res.size() == 0)31         res = "0";32 33     cout << res << endl;34 35     return 0;36 }