#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

bool cmp(int a, int b) {
    return a % 10 < b % 10;
}

int main() {
    vector<int> arr = {12, 25, 3, 18, 7};
    sort(arr.begin(), arr.begin() + 3, cmp);
    sort(arr.begin() + 3, arr.end());
    for (int num : arr) cout << num << " ";
    return 0;
}