summation stuff

Summation rule thing?

// given array of length n:

// var best = 0
for(hi <- 1 to n) {
  for(lo <- 1 to hi) {
    // var sum = 0
    for(i <- lo to hi) {
      sum += a(i)
    }
    best = best max sum
  }
}
return best

sum_{hi=1..n} sum{lo=1..hi} sum{i=lo..hi} 1

sum_{hi=1..n} sum{lo=1..hi} hi-lo+1

https://gyazo.com/5cc9d1f57e76e34f3503337e996b95c9
https://gyazo.com/642717f29acfb00d55896a40ec592a1f
https://gyazo.com/88d9877837ed467ca6530cd275610435