#include <bits/stdc++.h>
using namespace std;
long long int mod = 1e9 + 7;
const long double error = 1e-8;
const long double PI = acosl(-1);
inline long long int MOD(long long int x, long long int m = mod) {
  long long int y = x % m;
  return (y >= 0) ? y : y + m;
}
const int inf = 1e9;
const long long int infl = 1e18 + 1;
const int nmax = 300 + 10;
const int nmax2 = 2e6 + 10;
int n, m;
int clk, vis[nmax2];
int master[nmax2], sz[nmax2];
bool init(int u) {
  if (vis[u] == clk) return false;
  master[u] = u;
  sz[u] = 1;
  vis[u] = clk;
  return true;
}
int fnd(int u) {
  if (master[u] == u) return u;
  return master[u] = fnd(master[u]);
}
int unite(int u, int v) {
  u = fnd(u), v = fnd(v);
  if (u == v) return 0;
  if (sz[u] < sz[v]) swap(u, v);
  master[v] = u;
  sz[u] += sz[v];
  return -1;
}
int grid[nmax][nmax];
int ans[nmax2];
struct query {
  int x, y, id;
};
vector<query> queries[2][nmax2];
enum { ADD, DELETE };
void Query(int x, int y, int id, int c, int type) {
  queries[type][c].push_back({x, y, id});
}
int dx[] = {0, 0, 1, -1};
int dy[] = {1, -1, 0, 0};
int actualAdd(int x, int y) {
  if (!init((305 * (x) + (y)))) return 0;
  int z = (305 * (x) + (y));
  int ret = 1;
  for (int i = 0; i < 4; i++) {
    int nx = x + dx[i], ny = y + dy[i];
    int nz = (305 * (nx) + (ny));
    if (!(unsigned(nx) < n && unsigned(ny) < m)) continue;
    if (vis[nz] == clk) ret += unite(z, nz);
  }
  return ret;
}
void solve(int c) {
  clk++;
  for (query q : queries[0][c]) {
    ans[q.id] += actualAdd(q.x, q.y);
  }
  reverse(queries[1][c].begin(), queries[1][c].end());
  clk++;
  for (query q : queries[1][c]) {
    ans[q.id] -= actualAdd(q.x, q.y);
  }
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  ;
  int q;
  cin >> n >> m >> q;
  for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) Query(i, j, 0, 0, ADD);
  int c;
  for (int i = 1; i <= q; i++) {
    int x, y;
    cin >> x >> y >> c;
    x--, y--;
    if (grid[x][y] == c) continue;
    Query(x, y, i, grid[x][y], DELETE);
    grid[x][y] = c;
    Query(x, y, i, grid[x][y], ADD);
  }
  for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) Query(i, j, q + 1, grid[i][j], DELETE);
  for (int i = 0; i <= c; i++) {
    solve(i);
  }
  for (int i = 1; i <= q; i++) {
    ans[i] += ans[i - 1];
    cout << ans[i] << "\n";
  }
  return 0;
}
