tab = [
  [7, 1, 4],
  [9, 3, 0],
  [2, 6, 10],
  [5, 2, 1],
  [0, 8, 7],
  [4, 9, 3],
  [1, 0, 6],
  [10, 5, 2],
  [3, 7, 8],
  [6, 4, 9],
  [8, 2, 5],
  [0, 3, 1],
  [7, 10, 4],
  [9, 6, 0],
  [5, 8, 3],
  [2, 1, 7],
  [4, 0, 9],
  [3, 5, 6],
  [10, 7, 2],
  [1, 8, 4]
]


def tri(tableau):
    x = 0
    valueTab = {}
    for subTab in tableau :
        sum = 0  
        subTab.sort() 
        for value in subTab:
            sum = sum + value
        valueTab[x] = sum
        x = x + 1
    newValueTab = dict(sorted(valueTab.items(), key=lambda item: item[1]))
    newTab = []
    for key in newValueTab:
        newTab.append(tableau[key])
    return newTab

print(tri(tab))