#include <iostream>
#include <stdio.h>
#include <string.h>
#include <queue>
#include <math.h>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <stack>

using namespace std;

#define LL long long
const int N =1e5+10;
const int INF =0x3f3f3f3f;
LL a[10010][10010];
LL t,n,m,ans;
int main(){
	cin>>t;
	while(t--){
		cin>>n>>m;
		for(LL i=1;i<=n;i++){
			for(LL j=1;j<=m;j++){
				cin>>a[i][j];
				a[i][j]+=max(a[i-1][j],a[i][j-1]);
			}
		}
		cout<<a[n][m]<<endl;
	}
	return 0;
}

#include <iostream>
#include <algorithm>
using namespace std;
const int N = 1e3 + 10; 
int a[N][N];
int main(){
	int n;
	cin >> n;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= i; j++){
			cin >> a[i][j];
		}
	}
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= i; j++){
			a[i][j] = max(a[i-1][j-1], a[i-1][j]) + a[i][j];
		}
	}
	int maxx = 0;
	for(int i = 1; i <= n; i++){
		maxx = max(maxx, a[n][i]);
	}
	cout << maxx << endl;
}

#include<cstdio>
#include<algorithm>
#include<iostream>
using namespace std;
int f[1001][1001],r,c,i,j;
int t;
int main()
{
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d%d",&r,&c);
		for(i=1;i<=r;++i)
		{
			for(j=1;j<=c;++j)
			{
				scanf("%d",&f[i][j]);
			}
		}
		for(i=1;i<=r;++i)
		{
			for(j=1;j<=c;++j)
			{
				f[i][j]+=max(f[i-1][j],f[i][j-1]);
			}
		}
		printf("%d\n",f[r][c]);
	}
	return 0;
}

/************************************
Note Book:
************************************/
#include <iostream>
#include <cstdio>
#include <iomanip>
#include <cmath>
#include <algorithm>
#include <cstring>
#include <string>
#include <stack>
#include <queue>
#include <math.h>
#define LL long long
using namespace std;
const int INF = 0x3f3f3f3f;
const int N = 1e5 + 10;
int a[105][105];
int main()
{
	int t;
	cin >> t;
	while( t-- )
	{
		int n , m ;
		cin >> n >> m;
		for(int i = 1; i <= n; i++)
		{
			for(int j = 1; j <= m; j++)
			{
				cin >> a[i][j];
			}
		}
		for(int i = 1; i <= n; i++)
		{
			for(int j = 1; j <= m; j++)
			{
				a[i][j] += max(a[i-1][j] , a[i][j-1]);
			}
		}
		cout << a[n][m] << endl;
	}
	return 0;
}

#include <iostream>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <queue>
#include <stack>
#include <algorithm>
const int N = 1e6 + 10;
using namespace std;
int t, n, m, dp[110][110], ans;
int read() {
    char ch = getchar();
    int f = 1, num = 0;

    while (ch < '0' || ch > '9') {
        if (ch == '-')
            f = -1;

        ch = getchar();
    }

    while (ch >= '0' && ch <= '9') {
        num = num * 10 + ch - '0';
        ch = getchar();
    }

    return num * f;
}
int main() {
    t = read();

    while (t--) {
        n = read(), m = read();

        for (int i = 1; i <= n; i++)
            for (int j = 1; j <= m; j++)
                dp[i][j] = max(dp[i - 1][j], dp[i][j - 1]) + read();

        printf("%d\n", dp[n][m]);
    }
}

#include <math.h>
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <algorithm>
using namespace std;
int a[105][105];
int main()
{
    int t;
    cin >> t;
    while(t--)
    {
        int n , m;
        cin >>n >> m;
        for(int i = 1 ; i <= n ; i++)
            for(int j =1 ; j <= m ; j++)
                cin >> a[i][j];
        for(int i = 1 ; i <= n ; i++)
            for(int j = 1 ;j <= m ; j++)
                a[i][j] += max(a[i-1][j] , a[i][j-1]);

        cout << a[n][m] << endl;
    }
    return 0;
}