#include <stdio.h>
 
int main() {
    int a[10][10];
    int i, j, n;
    int mainDiagSum = 0, secDiagSum = 0;
 
    // Input order of square matrix
    printf("Enter the order of square matrix (n x n): ");
    scanf("%d", &n);
 
    // Input matrix elements
    printf("\nEnter elements of the matrix:\n");
    for (i = 0; i < n; i++) {
        for (j = 0; j < n; j++) {
            scanf("%d", &a[i][j]);
        }
    }
 
    // Calculate sums of main and secondary diagonals
    for (i = 0; i < n; i++) {
        for (j = 0; j < n; j++) {
            if (i == j)
                mainDiagSum += a[i][j];           // Main diagonal (top-left to bottom-right)
            if (i + j == n - 1)
                secDiagSum += a[i][j];            // Secondary diagonal (top-right to bottom-left)
        }
    }
 
    // Display matrix
    printf("\nMatrix:\n");
    for (i = 0; i < n; i++) {
        for (j = 0; j < n; j++) {
            printf("%d\t", a[i][j]);
        }
        printf("\n");
    }
 
    // Display diagonal sums
    printf("\nSum of Main Diagonal Elements = %d\n", mainDiagSum);
    printf("Sum of Secondary Diagonal Elements = %d\n", secDiagSum);
 
    return 0;
}