#include<iostream> using namespace std; const int N = 100010; int a[N]; int main(){ int n; cin >> n; for(int i = 0;i < n;i++ ) cin >> a[i]; int i = 0,j = n - 1; while(i < j){ if(a[i] == 0){ if(a[j] != 0){ swap(a[i],a[j]); i++; j--; } if(a[j] == 0) j--; } if(a[i] != 0) i++; } for(int i = 0;i < n;i++ )cout << a[i] << " "; }