def sumRange(self, i, j):
        return self.F[j+1] - self.F[i]
Get a full mapping of {option: queryset}.
dataset/ETHPy150Open algorhythms/LeetCode/303 Range Sum Query - Immutable.py/NumArray.sumRange--crossover with--dataset/ETHPy150Open mozilla/addons-server/src/olympia/addons/views.py/BaseFilter.all