Dado o array de dictionary abaixo some o total dos valores (https://gist.github.com/anabastos/fbdfef7fcc64105e76e5e26218ebf7e6)

desafio.js

const
  composeN = (...fs) => x =>
    fs.reduceRight((x, f) => f(x), x)
  
, map = f => xs =>
    xs.map(f)

, reduce = f => xs =>
    xs.reduce(f)
    
, sum = (x, y) => x + y
  
, dictionary =
    [ { '5': 50, '6': 60 }
    , { 'A': 10 }
    , { 'YEEZY': 30 }
    ]
  
composeN(
  reduce(sum),
  map(reduce(sum)),
  map(Object.values)
)(dictionary)