#include <bits/stdc++.h>
using namespace std;
int d[1000005];
int max1=-1,max0=-1,t,i,n;
void nhap()
{
int x;
cin>>n;
for (i=1;i<=n/2;i++)
{
cin>>d[i];
d[x]++;
}
}
void tim_max1()
{
t=0;max1=0;
for(int i=1;i<=n;i++)
{
if(d[i]==1) t++;
else t=0;
if(t>max1) max1=t;
}
}
void tim_max0()
{
t=0;max0=0;
for(int i=1;i<=n;i++)
{
if(d[i]==0) t++;
else t=0;
if(t>max0) max0=t;
}
}
void xuli()
{
tim_max1();
tim_max0();
if (max1>max0) cout<<"DUONG";
else
if (max1<max0) cout<<"TUNG";
else
if (d[n]==1) cout<<"DUONG";
else cout<<"TUNG";
}
int main()
{
nhap();
xuli();
}
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