← Back to blog Meta Intern OA 1point3acres Mianjing | CodeSignal + Cloud Storage VO Assistance
Meta

Meta Intern OA 1point3acres Mianjing | CodeSignal + Cloud Storage VO Assistance

2026-05-23

Meta Intern (SDE Intern / PE Intern) for 2026 spring + summer hiring runs the OA on CodeSignal. The current format remains "4 problems + 90 minutes", but PE Intern has migrated to a single "Cloud Storage 4-phase" problem. Below: problem-line breakdown per 1point3acres last 60 days + VO assistance roadmap.

Meta Intern OA Snapshot

Dimension Detail
Platform CodeSignal
Duration 90 minutes
Questions 4 (SDE) / 1 in 4 phases (PE)
Difficulty 1 Easy + 2 Medium + 1 Hard
Grading Auto + hidden stress tests

SDE Intern Problem Lines

Type 1: Array + Binary Search

def shortest_subarray_with_sum_at_least(arr, T):
    from collections import deque
    pre = [0]
    for x in arr:
        pre.append(pre[-1] + x)
    dq = deque()
    best = len(arr) + 1
    for i, p in enumerate(pre):
        while dq and p - pre[dq[0]] >= T:
            best = min(best, i - dq.popleft())
        while dq and pre[dq[-1]] >= p:
            dq.pop()
        dq.append(i)
    return best if best <= len(arr) else -1

Type 2: String Transformation — LC 76 / 567 / 438 family

Type 3: Graph / Tree — LC 207 / 210 / 1162

Type 4: Hard Closer — union-find / segment tree / bitmask DP

PE Intern Problem Line: Cloud Storage 4-Phase

Phase 1: Basic R/W

upload(filename, size), get(filename), copy(src, dst).

Phase 2: User Isolation

user_upload(user, filename, size), user_get(user, filename).

Phase 3: Backup

backup(user) snapshots state; restore(user, ts) rolls back.

Phase 4: TTL + Quota with LRU Eviction

from collections import defaultdict

class CloudStorage:
    def __init__(self):
        self.files = defaultdict(dict)
        self.quotas = {}

    def set_quota(self, user, q):
        self.quotas[user] = q

    def upload(self, user, fname, size, ts):
        used = sum(s for s, _ in self.files[user].values())
        q = self.quotas.get(user, float('inf'))
        if used + size > q:
            order = sorted(self.files[user].items(), key=lambda kv: kv[1][1])
            need = used + size - q
            for fn, (s, _) in order:
                if need <= 0: break
                del self.files[user][fn]
                need -= s
        self.files[user][fname] = (size, ts)

    def get(self, user, fname):
        return self.files[user].get(fname, None)

High-Frequency Cheat Sheet

Problem Type Frequency Core Pattern
Array + binary search ★★★★★ Prefix sum + monotonic deque
String sliding window ★★★★ Two pointers + Counter
Graph / topo / SCC ★★★★ DFS + indegree
4-phase Cloud Storage ★★★★★ dict + LRU + snapshot
Interval DP / bitmask ★★★ Classic templates

VO Assistance Path

For Meta Intern's "90 min × 4 / 4-phase progressive":

Add WeChat Coding0201 for pricing.

From Pacing Jitters to Passing Meta Intern OA

We were glad to help this cohort pass Meta Intern OA. Many candidates told us they never paced LC practice in 4 × 90-min CodeSignal format — they froze on Q3 and Q4 (Hard) got no attention.

If you're prepping Meta, Instagram, WhatsApp, or Reality Labs Intern OA / VO and feel pacing + 4-phase progressive design is shaky, contact oavoservice. We tailor OA / VO assistance to your gaps.


FAQ

Same OA bank for Intern vs New Grad?

Same backbone; New Grad ups difficulty by one tier (Easy → Medium, Medium → Hard).

Difference between 3/4 AC and 4/4 AC?

3/4 → phone screen; 4/4 → onsite direct.

Must PE Intern do Cloud Storage?

Yes. PE since 2025 standardized on Cloud Storage 4-phase. SDE Intern stays at 4 problems.

Result timeline?

Usually 7–14 days. Full AC may bring a phone screen invite within 3 days.


Preparing Meta Intern / New Grad OA / VO?

👉 Add WeChat: Coding0201grab the Meta Intern 1point3acres VO assistance pack.


Contact

Email: [email protected]
Telegram: @OAVOProxy