#include <stdio.h>
#include <math.h>

// Function to find the determinant of a square matrix
double determinant(double a[10][10], int n)
{
    double det = 0;
    int i, j, k, subi, subj;
    double submat[10][10];
    if (n == 2) 
    {
        return ((a[0][0] * a[1][1]) - (a[1][0] * a[0][1]));
    }
    else
    {
        for (k = 0; k < n; k++)
        {
            subi = 0; 
            for (i = 1; i < n; i++)
            {
                subj = 0;
                for (j = 0; j < n; j++)
                {
                    if (j == k)
                    {
                        continue;
                    }
                    submat[subi][subj] = a[i][j];
                    subj++;
                }
                subi++;
            }
            det = det + (pow(-1, k) * a[0][k] * determinant(submat, n - 1));
        }
        return det;
    }
}

int main()
{
    double a[10][10], det;
    int i, j, n;

    // Input the size of the matrix
    printf("Enter the size of matrix: ");
    scanf("%d", &n);

    // Input the elements of the matrix
    printf("Enter the elements of the matrix: \n");
    for (i = 0; i < n; i++)
    {
        for (j = 0; j < n; j++)
        {
            scanf("%lf", &a[i][j]);
        }
    }

    // Determine the determinant of the matrix
    det = determinant(a, n);

    // Print the result
    printf("Determinant of the matrix: %lf", det);

    return 0;
}