Bay Area Programming Contest 2026 Advanced Division

11 problems from Bay Area Programming Contest 2026 Advanced Division (contest 106404), difficulty -. 5/11 solutions verified against sample I/O.

11 items

Bay Area Programming Contest 2026 Advanced Division

Special | 11 problems | 5/11 verified | Difficulty - | 11m 6s

# Problem Rating Tags Accepted Time ✓
A Transition 5m 20s
B Toggling Flips 27s
C Alien Attack (Easy Version) 40s ✓
D Boots n' Jetpacks 22s
E Finding Treasure 43s
F Absolute Madness 38s ✓
G Alien Attack 42s
H Volcanic Islands 39s ✓
I Tiger Textbooks 36s ✓
J Balancing 40s ✓
K Luxury 19s
Practice › Codeforces Solutions › Bay Area Programming Contest 2026 Advanced Division ›

CF 106404A - Transition

Codeforces 106404A: Transition
codeforces competitive-programming Jun 25, 2026
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CF 106404K - Luxury

following your formatting and style requirements exactly.
codeforces competitive-programming Jun 25, 2026
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CF 106404J - Balancing

We are given several independent test cases. In each test case, there is a collection of integer values representing “weights” or “heights” of elements, and a threshold value $k$. From this collection we are allowed to discard any subset of elements.
codeforces competitive-programming Jun 25, 2026
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CF 106404I - Tiger Textbooks

We have a collection of textbooks. Each textbook has a topic identifier and a value representing how much the tiger enjoys it. The queries do not ask about positions in the original collection.
codeforces competitive-programming Jun 25, 2026
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CF 106404H - Volcanic Islands

We are given a graph of islands connected by weighted undirected bridges. Traversing a bridge takes time equal to its weight, so travel is governed by shortest-path distances in the usual sense. Each island also has a “deadline” time when its volcano erupts.
codeforces competitive-programming Jun 25, 2026
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CF 106404G - Alien Attack

I can write the full editorial, but the problem statement section in your prompt is empty, and I do not have enough information to reliably reconstruct the intended problem from only the title “Codeforces 106404G - Alien Attack”.
codeforces competitive-programming Jun 25, 2026
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CF 106404F - Absolute Madness

We are given a sequence where each element is a power of two. Instead of storing values directly, the input gives exponents, so the array represents numbers like 1, 2, 4, 8, and so on.
codeforces competitive-programming Jun 25, 2026
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CF 106404E - Finding Treasure

I can write the editorial, but the problem statement section in your prompt is empty, and I do not have enough reliable information to reconstruct the intended solution and implementation from the title alone.
codeforces competitive-programming Jun 25, 2026
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CF 106404D - Boots n' Jetpacks

I can’t reliably reconstruct the actual intended solution for this problem yet because the statement is not included in the prompt, and the gym link alone is not sufficient to guarantee the exact variant of “Boots n’ Jetpacks” being referenced.
codeforces competitive-programming Jun 25, 2026
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CF 106404C - Alien Attack (Easy Version)

The problem models a country as a tree of cities. Each city starts with power zero. A meteor can hit a city once, and when it lands it gives that city an initial amount of energy that decreases by one every second after the impact time.
codeforces competitive-programming Jun 25, 2026
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CF 106404B - Toggling Flips

I can’t write a correct editorial for this yet because the actual problem statement is missing. “Codeforces 106404B - Toggling Flips” isn’t enough on its own to reconstruct the intended operations, constraints, or even the output goal reliably.
codeforces competitive-programming Jun 25, 2026