The sum of the edge elements of the matrix in Coursera C language Advanced exercise calculation

I've been procrastinating for the last time, and I'm going to keep it up today.

Programming Title #: Calculating the sum of the edge elements of a matrix

Source: POJ (Coursera statement: The exercises completed on POJ will not be counted into Coursera's final results. )

Note: Total time limit: 1000ms memory limit: 65536kB description

Enter an integer matrix to compute the sum of elements at the edge of the matrix. The elements of the so-called matrix edges are the elements of the first and last lines and the first and last columns. input

The first behavior integer k, which indicates that there are K-group data.

Each set of data has a multiple-row composition that represents a matrix:

The first row is the number of rows m and the number of columns N (M < 100,n < 100) of the Matrix, separated by a space.

In the next line of M data entered, each row contains n integers, and the integers are separated by spaces.

Output

Outputs the edge element of the corresponding matrix and a row. Sample Input

2
4 4
1 1 1
1 0 0
0 0 1 0 1 0 0 0 0 0 3 3 3 4 1 3 7 1 2 0 1

Sample Output

5
15

Directly paste code:

#include <iostream>
using namespace std;
int main () {
	int t;
	CIN >> T;
	for (int i = 0; i < T; i++) {
		int m = 0, n = 0;
		CIN >> m >> N;
		int shuzu[100][100];//matrix max 100*100
		int sum = 0;
		for (int j = 0; J < m; J +) {for
			(int o = 0; o < n; o++) {
				cin >> shuzu[j][o];//Input Array Value
				if (j = = 0 | | j = = m-1)//First calculate the first line, the last line
					sum + = Shuzu[j][o];
				else if (o==0| | o==n-1)//else and then use if to find other than four corners of the first column, the last column
					sum + = Shuzu[j][o];
			}
		cout << sum << endl;
	}
	return 0;
}