2023 ICPC World Finals

11 problems from 2023 ICPC World Finals (contest 105255), difficulty -. 11/11 solutions verified against sample I/O.

11 items

2023 ICPC World Finals

ICPC/IOI | 11 problems | 11/11 verified | Difficulty - | 10m 23s

# Problem Rating Tags Accepted Time ✓
A Riddle of the Sphinx 54s ✓
B Schedule 1m 3s ✓
C Three Kinds of Dice 1m 2s ✓
D Carl's Vacation 1m 1s ✓
E A Recurring Problem 51s ✓
F Tilting Tiles 49s ✓
G Turning Red 54s ✓
H Jet Lag 1m 2s ✓
I Waterworld 46s ✓
J Bridging the Gap 45s ✓
K Alea Iacta Est 1m 16s ✓
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255B - Schedule

We are scheduling activities over a fixed number of weeks, and each team contributes exactly one representative per week. So every week is represented by a binary string of length n, where the i-th character tells whether member 1 or member 2 of team i is present.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255K - Alea Iacta Est

We are given up to six dice, each die showing one symbol on its top face after a roll, but internally each die has six possible symbols it can show, all equally likely.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255J - Bridging the Gap

A group of people needs to cross a bridge at night, but only a limited number of them can be on the bridge at once. Each person has a fixed crossing time, and when multiple people cross together, the group moves at the speed of the slowest member.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255H - Jet Lag

We are given a timeline starting at minute zero and a set of disjoint activity intervals, sorted in increasing order and not overlapping. During each activity interval, we must remain fully awake. Outside these intervals, we are free to choose when to sleep.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255I - Waterworld

The problem describes a planet whose surface is observed in a very structured way. Instead of looking at the whole sphere at once, the measurement process slices the planet in two directions. First, the planet is split vertically into n horizontal bands from pole to pole.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255G - Turning Red

We are given a set of lights, each initially colored red, green, or blue, and a set of buttons. Each button is connected to a subset of lights.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255F - Tilting Tiles

We are given two configurations of a rectangular board filled with obstacles and colored tiles. Empty cells exist, and tiles occupy some of them. Tiles are indistinguishable except for their color, and multiple tiles of the same color cannot be told apart individually.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255D - Carl's Vacation

We are given two identical geometric objects: right square pyramids standing on the same horizontal ground plane. Each pyramid is described by one directed edge of its square base and a height.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255E - A Recurring Problem

We are asked to enumerate a very large collection of integer sequences, where each sequence is generated by a positive linear recurrence.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255C - Three Kinds of Dice

We are given two dice, each described by a multiset of face values. When two dice are rolled against each other, we pick one face uniformly from each die and compare the numbers. The higher number wins the round, and ties are split evenly.
codeforces competitive-programming Jun 24, 2026
Practice › Codeforces Solutions › 2023 ICPC World Finals ›

CF 105255A - Riddle of the Sphinx

We are trying to recover three hidden integers, each representing the number of legs of a mythical creature. We cannot observe them directly.
codeforces competitive-programming Jun 24, 2026