#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
int *ptr = new int [n];
for(int i=0; i<n; i++)
cin >> (*(ptr+i));
int *buf = new int;
for(int i = 0; i < n - 1; i++)
{
for(int j = 0; j < n - i - 1; j++)
if(*(ptr+j) > *(ptr+j + 1))
{
*buf = *(ptr+j);
*(ptr+j) = *(ptr+j+1);
*(ptr+j+1) = *buf;
}
}
for(int i=0; i<n; i++)
cout << (*(ptr+i));
delete []ptr;
return 0;
}
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