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AMR11A.cpp
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AMR11A.cpp
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/*My First Template :D*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
#define MOD (ll)1000000007
#define pb push_back
#define EPS 1e-9
#define FOR(i,n) for(int i = 0;i < n; i++)
#define FORE(i,a,b) for(int i = a;i <= b; i++)
#define tr(container, it) for(typeof(container.begin()) it = container.begin(); it != container.end(); it++)
#define io ios_base::sync_with_stdio(false);cin.tie(NULL);
#define endl '\n'
#define F first
#define S second
#define sp ' '
# define M_PI 3.14159265358979323846
template <typename T> T gcd(T a, T b){return (b==0)?a:gcd(b,a%b);}
template <typename T> T lcm(T a, T b){return a*(b/gcd(a,b));}
template <typename T> T mod_exp(T b, T p, T m){T x = 1;while(p){if(p&1)x=(x*b)%m;b=(b*b)%m;p=p>>1;}return x;}
template <typename T> T invFermat(T a, T p){return mod_exp(a, p-2, p);}
template <typename T> T exp(T b, T p){T x = 1;while(p){if(p&1)x=(x*b);b=(b*b);p=p>>1;}return x;}
const int MAXN = 1e5+5;
int main(){
io;
int t;
cin >> t;
while(t--){
int r, c;
cin >> r >> c;
int arr[r][c];
FOR(i,r){
FOR(j,c)
cin >> arr[i][j];
}
arr[r-1][c-1] = 1;
for(int j = c-2; j >= 0; j--){
arr[r-1][j] = arr[r-1][j+1]-arr[r-1][j];
if(arr[r-1][j] <= 0)
arr[r-1][j] = 1;
}
for(int i = r-2;i >= 0; i--){
arr[i][c-1] = arr[i+1][c-1]-arr[i][c-1];
if(arr[i][c-1] <= 0)
arr[i][c-1] = 1;
}
for(int i = r-2;i >= 0; i--){
for(int j = c-2; j >= 0; j--){
arr[i][j] = min(arr[i+1][j], arr[i][j+1]) - arr[i][j];
if(arr[i][j] <= 0)
arr[i][j] = 1;
}
}
cout << arr[0][0] << endl;
}
return 0;
}