TheForces Round #17 (AOE-Forces)

6 problems from TheForces Round #17 (AOE-Forces) (contest 104432), difficulty -. 1/6 solutions verified against sample I/O.

6 items

TheForces Round #17 (AOE-Forces)

Special | 6 problems | 1/6 verified | Difficulty - | 9m 15s

# Problem Rating Tags Accepted Time ✓
A Easy Peasy 1m 45s
B Letters Game 1m 5s ✓
C Odd Subbarray 1m 19s
D Max Co Matches 1m 44s
E Army Value 1m 51s
F Amir and Tree 1m 31s
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432F - Amir and Tree

We are given an undirected tree with $n$ vertices. We are allowed to choose a root, but with the restriction that the root cannot be a leaf. Once a root is fixed, every vertex $v$ has a value $f(v)$ defined recursively from the leaves upward.
codeforces competitive-programming Jun 30, 2026
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432E - Army Value

We are counting how many ways to choose three integers, one for each army type, such that each chosen value lies inside its own interval, and the XOR of all three chosen values has a special property. More concretely, we pick values $a1, a2, a3$, where $ai in [li, ri]$.
codeforces competitive-programming Jun 30, 2026
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432D - Max Co Matches

We are given a line of players, each sitting in a fixed seat from left to right, and each player has a rating value.
codeforces competitive-programming Jun 30, 2026
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432A - Easy Peasy

We are given several independent test cases. In each one, there is a list of positive integers. We are allowed to insert exactly one additional integer into this list.
codeforces competitive-programming Jun 30, 2026
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432C - Odd Subbarray

We are given an integer array and asked to count how many contiguous subarrays have a special property: if you multiply all elements inside the subarray, the resulting product has an odd number of divisors.
codeforces competitive-programming Jun 30, 2026
Practice › Codeforces Solutions › TheForces Round #17 (AOE-Forces) ›

CF 104432B - Letters Game

We are given a sequence of letters, where each letter is already assigned to a destination company. At the same time, we also have envelopes, and each envelope has a fixed company written on it, matching the same sequence structure.
codeforces competitive-programming Jun 30, 2026