#include<bits/stdc++.h>
#define poly vector<int>
#define IOS ios::sync_with_stdio(false)
#define ll long long
#define mp make_pair
#define mt make_tuple
#define pa pair < int,int >
#define fi first
#define se second
#define inf 1e18
#define mod 998244353
#define sz(x) ((int)((x).size()))
#define int ll
// #define N 
using namespace std;
const int N=500005;
int cnt;
poly G[N];
vector<poly>a,b;
int vis[N];
pa E[N];
int egt;
poly Rt[N],Lf[N];
int n,m,q;
int DFN;
int dfn[N];
int id[N];
int pl[N],pr[N];
int val[N];
int du[N];
int ct[N];
void dfs(int i)
{
    while (G[i].size())
    {
        int u=G[i].back();G[i].pop_back();
        if (vis[u]) continue;
        vis[u]=1;
        int v=E[u].fi^E[u].se^i;
        dfs(v);
        // cout<<"vis "<<i<<"->"<<v<<" "<<val[v]<<endl;
        if (v==E[u].fi) 
        {
            if (i!=cnt) Rt[v].push_back(i);
        }
        else if (v!=cnt) Lf[i].push_back(v);
    }
}
void solve(int l,int r)
{
    if (l==r) return;
    int mid=l+(r-l)/2;

    cnt=n;
    ++DFN;
    egt=0;

    for (int i=1;i<=n;i++)
    {
        pl[i]=l;
        pr[i]=mid+1;
        for (int j=l;j<=r;j++)
        {
            if (ct[a[i][j]]) 
            {
                b[i][pl[i]++]=a[i][j];
                b[i][pr[i]++]=a[i][j];
            }
            ct[a[i][j]]^=1;
        }
        for (int j=l;j<=r;j++) 
        {
            if (ct[a[i][j]]) 
            {
                if (dfn[a[i][j]]!=DFN)
                {
                    dfn[a[i][j]]=DFN;
                    id[a[i][j]]=++cnt;
                    val[cnt]=a[i][j];
                }
                int u=id[a[i][j]];
                ++egt;
                E[egt]=mp(i,u);
                G[u].push_back(egt);
                G[i].push_back(egt);
                du[u]^=1,du[i]^=1;

                ct[a[i][j]]=0;
            }
        }
    }
    ++cnt;
    for (int i=1;i<cnt;i++) 
        if (du[i]) 
        {
            E[++egt]=mp(i,cnt);
            G[cnt].push_back(egt),G[i].push_back(egt);
        }
    for (int i=1;i<=cnt;i++) 
    {
        dfs(i);
        // cout<<endl;
    }
    for (int i=1;i<=n;i++)
    {
        // cout<<i<<","<<pl[i]<<" "<<pr[i]<<endl;
        for (auto u:Lf[i]) b[i][pl[i]++]=val[u];
        for (auto u:Rt[i]) b[i][pr[i]++]=val[u];
        assert(sz(Lf[i])==sz(Rt[i]));
        // cout<<i<<","<<sz(Lf[i])<<" "<<sz(Rt[i])<<endl;
        poly().swap(Lf[i]);
        poly().swap(Rt[i]);
    }
    for (int i=1;i<=egt;i++) vis[i]=0;
    for (int i=1;i<=cnt;i++) poly().swap(G[i]);
    for (int i=1;i<=n;i++)
        for (int j=l;j<=r;j++)
            a[i][j]=b[i][j];
    solve(l,mid);
    solve(mid+1,r);
}  
void BellaKira()
{
    cin>>n>>m>>q;
    a=vector<poly>(n+1,poly(m+1,0));
    b=a;
    for (int i=1;i<=n;i++)
        for (int j=0;j<m;j++)
            cin>>a[i][j];
    solve(0,m-1);
    for (int i=1;i<=n;i++)
    {
        for (int j=0;j<m;j++)
        {
            cout<<a[i][j]<<" ";
        }
        cout<<'\n';
    }
}
signed main()
{
    IOS;
    cin.tie(0);
    int T=1;
    while (T--)
    {
        BellaKira();
    }
}
/*list:
1.mod 998244353 or 1e9+7 or ???
2.N
3.duipai shuju xingtai duoyidian
...
*/