C++ :

#include<bits/stdc++.h>
using namespace std;
int N,ans,x;
int zs(int x)
{
	int s=0;
	while(x!=0)
	{
		s=s*10+x%10;
		x/=10;
	}
	return s;
}
int main()
{
    cin>>N;
    while(N--)
    {
    	cin>>x;
    	ans+=zs(x);
    }
    cout<<ans;
}