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# A simple Python program to
# find sum of diagonals
MAX = 100
 
def printDiagonalSums(mat, n):
 
    principal = 0
    secondary = 0;
    for i in range(0, n):
        for j in range(0, n):
 
            # Condition for principal diagonal
            if (i == j):
                principal += mat[i][j]
 
            # Condition for secondary diagonal
            if ((i + j) == (n - 1)):
                secondary += mat[i][j]
         
    print("Principal Diagonal:", principal)
    print("Secondary Diagonal:", secondary)
 
# Driver code
a = [[ 1, 2, 3, 4 ],
     [ 5, 6, 7, 8 ],
     [ 1, 2, 3, 4 ],
      [ 5, 6, 7, 8 ]]
printDiagonalSums(a, 4)
 
# This code is contributed
# by ihritik

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