#include <iostream>
#include <fstream>

using namespace std;

ifstream in("tabel.in");
ofstream out("tabel.out");

int mat[55][55];
int n, m;
int nr;

int main() {
    in >> n >> m >> nr;
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            mat[i][j] = -1;
        }
    }
    for (int i = 0; i < nr; ++i) {
        int l, c, v;
        in >> l >> c >> v;
        mat[l][c] = v;
    }

    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            if(mat[i][j] == -1){
                mat[i][0]++;
                mat[0][j]++;
            }
        }
    }



    bool ok = true;

    while(ok){
        ok = false;
        for (int i = 1; i <= n; ++i) {
            if(mat[i][0] == 1){
                ok = true;
                int poz = -1;
                int sum = 0;
                for (int j = 1; j < m; ++j) {
                    if(mat[i][j] == -1){
                        poz = j;
                    }
                    else
                        sum += mat[i][j];
                }
                if(mat[i][m] == -1)
                    poz = m;
                if(poz == m)
                    mat[i][poz] = sum;
                else
                    mat[i][poz] = mat[i][m] - sum;
                mat[i][0]--;
                mat[0][poz]--;
            }
        }
        for (int j = 1; j <= m; ++j) {
            if(mat[0][j] == 1){
                ok = true;
                int poz = -1;
                int sum = 0;
                for (int i = 1; i < n; ++i) {
                    if(mat[i][j] == -1){
                        poz = i;
                    }
                    else
                        sum += mat[i][j];
                }
                if(mat[n][j] == -1)
                    poz = n;
                if(poz == n)
                    mat[n][j] = sum;
                else
                    mat[poz][j] = mat[n][j] - sum;
                mat[0][j]--;
                mat[poz][0]--;
            }
        }
    }
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            out << mat[i][j] << " ";
        }
        out << "\n";
    }
    return 0;
}