IIT(ISM) Virtual Farewell

10 problems from IIT(ISM) Virtual Farewell (contest 102625), difficulty -. 8/10 solutions verified against sample I/O.

10 items

IIT(ISM) Virtual Farewell

Special | 10 problems | 8/10 verified | Difficulty - | 15m 24s

# Problem Rating Tags Accepted Time ✓
A Farewell or Best Wishes 59s
B Amber Kand 2m 31s ✓
C Matiyao Be Mid Sem hee toh hai 5m 46s ✓
D Best Wishes !! 1m 9s ✓
E Dictator's plan for Valentine's day! 55s ✓
F Basant and the Master Plan 59s ✓
G Secret Society and a Certain Someone 58s ✓
H Ye Wali Meri Hai!! 31s
I Treat To Banta Hai 49s ✓
J RD Bhaiya and his new token system 47s ✓
Practice › Codeforces Solutions › IIT(ISM) Virtual Farewell ›

CF 102625C - Matiyao Be Mid Sem hee toh hai

We have an array of marks representing the current score of each subject. There are several operations performed in a fixed order. During operation j, we may select up to Bj subjects and overwrite their marks with the value Cj.
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CF 102625A - Farewell or Best Wishes

The grid is a rectangular board with N rows and M columns. An auto starts from the top-left tile and follows one fixed route: it first moves along the first row until it reaches the top-right corner, then moves downward along the last column until it reaches the bottom-right…
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CF 102625J - RD Bhaiya and his new token system

The token machine stores a set of inserted integers. A valid token number is not one of the inserted values directly. Instead, it is any XOR value that can be obtained by choosing some subset of the stored numbers, including the empty subset, whose XOR is zero.
codeforces competitive-programming Aug 3, 2026
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CF 102625I - Treat To Banta Hai

The problem asks us to choose one continuous group of juniors from the given order. We may remove some juniors from the beginning and some from the end, but the remaining juniors must stay consecutive. If the chosen segment has values t1, t2, ...
codeforces competitive-programming Aug 3, 2026
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CF 102625H - Ye Wali Meri Hai!!

I can write the editorial, but the problem statement section in your prompt is empty and the solution requires knowing the exact problem details. I found the problem page for Codeforces Gym 102625H, "Ye Wali Meri Hai!!
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CF 102625G - Secret Society and a Certain Someone

The problem describes a tree of secret offices connected by passages. Each passage has a security level. For every possible meeting location, every other office sends a representative along the unique path to that office.
codeforces competitive-programming Aug 3, 2026
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CF 102625F - Basant and the Master Plan

A direct solution would iterate through every number in each shop interval, check whether all digits belong to the allowed set, compute the digit sum, and test whether some digit satisfies the average condition. This is correct because it follows the definition exactly.
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CF 102625E - Dictator's plan for Valentine's day!

The problem describes a line extending from the starting point Ruby at coordinate 0 toward the Main Gate. Guards stand at fixed coordinates, and each guard is active only during a certain time interval.
codeforces competitive-programming Aug 3, 2026
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CF 102625D - Best Wishes !!

We start with a charge of 1 on the first day. Every following day, the new charge must be obtained from the previous day's charge by one of three operations: doubling it, tripling it, or increasing it by one.
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CF 102625B - Amber Kand

We have two strings of equal length. The first string is the starting arrangement, and the second string is the target arrangement we want to reach.
codeforces competitive-programming Aug 3, 2026