Infosys HackWithInfy 2026: Kaise Crack Kare

HackWithInfy = Infosys ka national-level coding contest. Top performers ko ₹10-12 LPA "System Engineer Specialist" (SES) ya "Power Programmer" role milta hai.

Average Infosys SE role ₹3.6 LPA, but HWI champions ka 3x. Worth the effort.

HackWithInfy 2026 overview#

Eligibility:

• B.E./B.Tech/MCA students
• Pre-final and final year
• All branches eligible
• 60% minimum throughout (10th, 12th, current)

Format:

Round 1: Online qualifier

• 3 coding problems
• 3 hours
• HackerRank platform
• Easy, medium, hard

Round 2: Grand finale (Top 100)

• Onsite at Infosys campus
• More complex problems
• 6 hours
• Live coding + algo

Prizes:

• Winner: ₹2.5 lakh + Power Programmer role (₹11 LPA)
• Runner-up: ₹1.5 lakh + SES role (₹8 LPA)
• 2nd Runner-up: ₹1 lakh + SES role
• Top 100: Pre-placement offer (PPO) + SES role

Skill level required#

HWI is harder than TCS NQT. Required:

Algorithms:

• Dynamic programming (heavy)
• Graph algorithms (BFS, DFS, Dijkstra)
• Greedy algorithms
• Divide and conquer
• Backtracking

Data structures:

• Arrays, strings (advanced)
• Linked lists
• Stacks, queues, deques
• Trees (BST, segment, fenwick)
• Heaps
• Hash tables
• Tries
• Disjoint set union

Math:

• Number theory
• Combinatorics
• Probability
• Modular arithmetic

LeetCode rating 1500+ recommended. CodeChef 3-star or above.

90-day preparation plan#

Phase 1 (Day 1-30): Foundation

Daily routine:

• 2 hours theory (DSA fundamentals)
• 2 hours problem solving (LeetCode easy + medium)
• 30 min reading editorial solutions

Topics:

• Arrays + 2 pointers
• Hash maps
• Strings
• Linked lists
• Recursion basics
• Binary search

Target: 100 LeetCode problems solved (mostly easy + medium)

Phase 2 (Day 31-60): Intermediate

Daily routine:

• 3 hours coding
• 1 hour algorithm reading

Topics:

• Trees (traversals, BST, LCA)
• Graphs (BFS, DFS, shortest path)
• Dynamic programming basics
• Greedy algorithms
• Backtracking

Target: 200 problems total. Mix of medium + few hard.

Phase 3 (Day 61-90): Contest prep

Daily routine:

• 1 LeetCode contest weekly
• 1 CodeForces contest weekly
• Past HWI problems daily
• Mock tests

Topics:

• Advanced DP
• Segment trees
• Game theory
• Bit manipulation
• Number theory

Target: 300+ problems, 80% medium, 20% hard

Best resources#

Practice platforms:

• LeetCode (must)
• CodeForces (contest practice)
• HackerRank (Infosys-style problems)
• GeeksforGeeks (theory)
• AtCoder (Japanese problems)

Topic-wise tracks:

• Striver's A2Z DSA sheet
• Love Babbar 450 questions
• NeetCode 150
• Apna College DSA sheet

Past papers:

• HackerRank "Infosys HackWithInfy" tag
• HWI 2023, 2024 past problems on Indiabix
• LeetCode + GFG companies tag

YouTube:

• Striver (DSA)
• Aditya Verma (DP)
• Tushar Roy (problem solving)
• William Lin (competitive programming)
• Errichto (advanced)

Question types#

Round 1 typical questions:

Easy (1 question):

• Array manipulation
• String operations
• Basic math
• Time: 30-45 min

Medium (1 question):

• DP basic
• Graph problem (BFS/DFS)
• Tree operations
• Time: 60-75 min

Hard (1 question):

• Advanced DP
• Segment trees
• Complex graph
• Time: 90-120 min

Round 2 (finale) typical:

• 4-6 problems
• Mix of medium and hard
• Some require novel approach
• Time pressure intense

Day-of strategy#

Round 1 (3 hours, 3 problems):

Hour 1:

• All 3 problems read karo
• Easy solve karo first (45 min)
• Medium try karo

Hour 2:

• Medium solve karo
• Test cases edge case wala

Hour 3:

• Hard problem
• Best attempt
• Partial points bhi count hote hai

Strategy:

• Submit something for all 3 (even partial)
• Test cases all run karo
• Code clean rakho

Coding tips#

Language choice:

• C++ (most competitive, STL benefits)
• Python (less verbose, but slower)
• Java (balanced)

Most HWI top performers use C++.

Time complexity awareness:

• 10^6 operations: 1 second
• 10^7 operations: 1-2 seconds
• 10^8 operations: 5-10 seconds (TLE risk)

Common mistakes:

• Integer overflow (use long long)
• Off-by-one errors
• Edge cases missed (empty array, single element)
• Wrong I/O format

Template usage:

C++ template ready rakho:

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    // your code here
    return 0;
}

Speed advantage in real contest.

Past HWI patterns#

Common problem types seen:

1. Array manipulation with constraints

   • Find subarray with given sum
   • Maximum sum subarray (Kadane's)
   • Sliding window problems

2. String problems

   • Longest palindromic substring
   • String matching (KMP, Z-algorithm)
   • Anagram problems

3. Tree problems

   • Lowest common ancestor
   • Tree diameter
   • Path sum variations

4. Graph problems

   • Connected components
   • Cycle detection
   • Shortest path variations

5. Dynamic programming

   • Longest common subsequence
   • Knapsack variations
   • Matrix chain multiplication
   • Edit distance

Practice these patterns extensively.

Finale tips#

Top 100 ho gaye? Now bigger challenges:

• Physical exam at Infosys campus
• 6-hour duration
• Tougher problems
• Live judging
• Senior engineers present

Preparation:

• Last 15 days mock contests daily
• 6-hour endurance practice
• Mental stamina build karo

Pre-finale:

• Travel arrangements
• Stay arrangements (Infosys hosts top 100)
• Rest day before exam
• Eat light, sleep early

Beyond HWI#

Even if you don't win:

• Top 1000 = direct interview for SE role
• HWI participation = strong resume signal
• Skills learned applicable to other companies

Companies that respect HWI rank:

• Google, Microsoft, Amazon (interview shortcuts)
• Indian product companies (Razorpay, Cred)
• All major IT services

Use as leverage:

• "Top 200 in HWI 2025" on resume
• Network with finalists (future colleagues)
• LinkedIn post for visibility

Yaad rakh#

HWI tough hai but transformative.

• 90 days dedicated preparation
• 300+ problems solved minimum
• DP, graphs, trees master karo
• One language fluency (C++ preferred)
• Mock contests weekly

Tier-3 college se bhi log HWI win karte hai. Skills + consistency matters, not college.

JobRise pe Infosys interview prep tools use karo aur naukri secure karo.