Иван Иванов

Generation

The trace of a square matrix is the sum of the elements of the main diagonal. Write a program that prints the trace of a given square matrix. Input data format The input to the program is a natural number. n is the number of rows and columns in the matrix, then the matrix elements (integers) line by line, separated by a space.

def trace_matr(list_):
    trace = 0
    for i in range(len(list_)):
        trace += list_[i][i]
    return trace

Python

Generate

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