Bac 2019

///_____SUBIECTUL III 1_____
int Impare(int n)
{
    int v[11], k=0, i;
    while(n)
    {
        v[++k]=n%10;
        n/=10;
    }
    for(i=k; i>=1; i--)
    {
        if(v[i]%2)
            v[i]--;
        n=n*10+v[i];
    }
    return n;
}

///_____SUBIECTUL III 2_____
#include <iostream>
using namespace std;
int a[22][22];
int main()
{
    int n, m, i, j;
    bool ok=1;
    cin>>m>>n;
    for(i=1; i<=m; i++)
        for(j=1; j<=n; j++)
            cin>>a[i][j];
    n++;
    for(i=1; i<=m; i++)
    {
        for(j=1; j<n/2; j++)
        {
            if(a[i][j]!=a[i][n-j])
            {
                ok=0;
                break;
            }
        }
        if(ok==0)
            break;
    }
    if(ok)
        cout<<"DA";
    else
        cout<<"NU";
    return 0;
}