#55619: c++ dfs解 供參
#include <bits/stdc++.h>
using namespace std;
int r, c;
int a[105][105];
int m[105][105];
int dx[4] = {1, -1, 0, 0};
int dy[4] = {0, 0, 1, -1};
int dfs(int rw, int cl) {
if (m[rw][cl] != -1) return m[rw][cl];
int max_len = 1;
for (int i = 0; i < 4; i++) {
int nr=rw+dx[i];
int nc=cl+dy[i];
if (nr >= 0 && nr < r && nc >= 0 && nc < c) {
if (a[nr][nc] < a[rw][cl]) {
max_len = max(max_len, 1 + dfs(nr, nc));
}
}
}
return m[rw][cl] = max_len;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int t;
if (!(cin >> t)) return 0;
while (t--) {
string s;
cin >> s >> r >> c;
for (int i = 0; i < r; i++) {
for (int j = 0; j < c; j++) {
cin >> a[i][j];
}
}
memset(m, -1, sizeof(m));
int ans = -1;
for (int i = 0; i < r; i++) {
for (int j = 0; j < c; j++) {
ans = max(ans, dfs(i, j));
}
}
cout << s << ": " << ans << "\n";
}
return 0;
}