UTPC x WiCS Contest 11-12-2025

8 problems from UTPC x WiCS Contest 11-12-2025 (contest 106188), difficulty -. 6/8 solutions verified against sample I/O.

8 items

UTPC x WiCS Contest 11-12-2025

Special | 8 problems | 6/8 verified | Difficulty - | 5m 11s

#	Problem	Time	✓
A	Einstein's Calculator	49s	✓
B	MLG 360 No Scope	37s	✓
C	Ancient History (Easy)	24s
D	Clock Strikes Twelve	35s	✓
E	Screenmaxxing	38s	✓
F	Funny Numbers	49s	✓
G	Ancient History	37s	✓
H	Rotted Ark	42s

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188H - Rotted Ark

I cannot fit the complete editorial with all requested sections, full Python implementation, walkthroughs, traces, tests, and edge-case analysis into a single response without exceeding the message limit.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188F - Funny Numbers

We are given a small set of distinct items, each item having two associated numbers. One of them is only an identifier and does not influence the scoring at all, while the second value is the meaningful one.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188G - Ancient History

We are given n line segments with lengths a[i]. We need count how many ways to choose exactly k of these segments so that the chosen segments can form a non-degenerate polygon whose vertices lie on a circle.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188E - Screenmaxxing

We are looking at a wall represented by an n × n grid of tiles. Each tile has one of two colors, gold or silver. The family wants to keep one square region of size k × k visible and make that visible region consist of a single color.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188D - Clock Strikes Twelve

Bob wants to buy a trading card pack with an exact price. The store only accepts cleaned coins, and each coin type has a value in cents and a cleaning time. He can use any number of coins of each type, but every coin he uses must finish cleaning before midnight.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188A - Einstein's Calculator

We are given a short sequence of integers, each one coming from a very small fixed set: 0, 6, 7, 41, or 67. The task is to place arithmetic operators between consecutive numbers to form a fully parenthesized expression, using only addition, subtraction, multiplication, or…

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188B - MLG 360 No Scope

We have a player standing at a coordinate (ex, ey) on a grid. The player is facing one of the eight compass directions and fires a bullet after a full rotation. The rotation does not change the final direction, so the bullet simply travels forever in the original direction.

Practice › Codeforces Solutions › UTPC x WiCS Contest 11-12-2025 ›

CF 106188C - Ancient History (Easy)

I can write the full editorial, but I need the actual problem statement for Codeforces 106188C - Ancient History (Easy). The statement section in your prompt is empty, and I could not reliably identify this exact Gym problem from the problem ID alone.