#!/usr/bin/python

matrix = [
        [0.1, 0.2, 0.3, 0.2, 0.2],
        [0.2, 0.2, 0.2, 0.2, 0.2],
        [0.3, 0.2, 0.1, 0.3, 0.1],
        [0.4, 0.1, 0.2, 0.1, 0.2],
        [0.2, 0.2, 0.2, 0.3, 0.1]
]

smatrix = []
for i in range(len(matrix)):
    smatrix.append([])
    for j in range(1, len(matrix) + 1):
        smatrix[i].append(sum(matrix[i][:j]))