/// Containers Start
#include <algorithm>
#include <bitset>
#include <cstdlib>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
/// C Header Files
#include <cassert>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <math.h>
#include <stdio.h>
/// Containers End

using namespace std;

/// Math Start
#define PI acos(-1.0)
#define Pi 3.141592653589793
#define EPS (1e-7)
#define INF (0x3f3f3f3f)
// #define INF 9e+18

/// Math End

/// Extra Start
#define nn '\n'
#define pb push_back
#define ull unsigned long long
#define ll long long
#define MOD 1000000007
#define sz(a) int((a).size())
#define space " "
#define All(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
/// Extra End

#define rep(i, n) for (int i = 0; i < n; i++)
#define Cini(a)                                                                \
    int a;                                                                     \
    cin >> a;
#define Cinii(a, b)                                                            \
    int a, b;                                                                  \
    cin >> a >> b;
#define Ciniii(a, b, c)                                                        \
    int a, b, c;                                                               \
    cin >> a >> b >> c;
#define Cins(s)                                                                \
    string s;                                                                  \
    cin >> s;
#define Cinss(s1, s2)                                                          \
    string s1, s2;                                                             \
    cin >> s1 >> s2;
#define Cinc(c)                                                                \
    char c;                                                                    \
    cin >> c;
/// Functions End

/// Debug Start
#define deb(x) cout << #x << ": " << x << endl
#define deb2(x, y) cout << #x << ": " << x << '\t' << #y << ": " << y << endl;
#define deb3(x, y, z)                                                          \
    cout << #x << ": " << x << '\t' << #y << ": " << y << '\t' << #z << ": "   \
         << z << endl;
/// Debug End

int dx[] = {1, 0, -1, 0};
int dy[] = {0, 1, 0, -1};
// int dx[] = {-1, 0, 1};
// int dy[] = {-1, 0, 1};

/**>>>>>>>>>>>>>>>>>>> END <<<<<<<<<<<<<<<<<<**/

/// template

bool _mysort(pair<int, int> a, pair<int, int> b) {
    if (a.second != b.second)
        return a.second > b.second;
    else {
        return a.first < b.first;
    }
}

signed main(void) {
    cin.sync_with_stdio(false);
    cin.tie(0);
    Cinii(H,W);
    Cini(N);
    vector<pair<int,int> > a(N);
    vector<vector<int> > c(H,vector<int>(W,0));
    rep(i,N){
        a[i].first= i+1;
        cin >> a[i].second;
    }
    sort(All(a),_mysort);
    int vec_incr=0;
    int x=0,y=0;
    rep(i,N){
        int count = a[i].second;
        rep(j,count){
            if(c[y][x]==0){
                c[y][x]=a[i].first;
            }
            if(0<=y+dy[vec_incr]&&y+dy[vec_incr]<=H-1&&0<=x+dx[vec_incr]&&x+dx[vec_incr]<=W-1){
                if (c[y + dy[vec_incr]][x + dx[vec_incr]]==0){
                    y += dy[vec_incr];
                    x += dx[vec_incr];
                }else{
                    (vec_incr+=1)%=4;
                    y += dy[vec_incr];
                    x += dx[vec_incr];
                }
            }else{
                (vec_incr+=1)%=4;
                y += dy[vec_incr];
                x += dx[vec_incr];
            }
        }
        // cout << nn;
        // rep(i,H){
        //     rep(j,W) cout << c[i][j] << " ";
        //     cout << nn;
        // }
    }

    rep(i,H){
        rep(j,W) cout << c[i][j] << " ";
        cout << nn;
    }

    return 0;
}


Measured memory_bytes: 384