weights = [7, 2, 5, 10, 8]
def days_needed(capacity):
    days, load = 1, 0
    for weight in weights:
        if weight > capacity:
            return len(weights) + 1
        if load + weight > capacity:
            days += 1
            load = 0
        load += weight
    return days
lo, hi = max(weights), sum(weights)
while lo < hi:
    mid = (lo + hi) // 2
    if days_needed(mid) <= 2:
        hi = mid
    else:
        lo = mid + 1
assert days_needed(lo) <= 2 and days_needed(lo - 1) > 2
result = {"capacity": lo, "days_at_capacity": days_needed(lo)}
import json
print(json.dumps(result, ensure_ascii=False, sort_keys=True))