Practice.
Compete.
Break OAs.
Solve from a bank of 2,800+ questions, duel a friend 1v1, take group OAs, and join the live contest every Saturday night.
Two Sum II
MediumSame problem, same clock. First to pass all tests wins.
DSA and interview problems ready to solve.
Same problem, same clock. Fastest accepted solution wins.
Solve the problem of the day, earn an OA credit.
9:00 to 10:30 PM IST, ranked live.
Four ways to practice.
Pick your pressure.
Challenge a friend
Share a link, get the same problem, and race. Live test progress for both sides, and the first accepted solution takes it.
Take an OA together
Create a room, share the invite code, and run one assessment for the whole group. Everyone gets the same questions at the same time, with a shared leaderboard.
Solve one, earn a credit
A fresh problem every day. Solve it and get +1 OA credit added to your account.
Saturday, 9:00 to 10:30 PM
90 minutes, timed problems, one ranked leaderboard. Join live or see where you would have landed.
Saturday night
is contest night.
Every Saturday from 9:00 to 10:30 PM IST. Solve against the clock, climb the live leaderboard, and find out how you stack up.
Pay once.
Or earn your OAs.
Not paying?
Earn it.
One credit for every daily problem you solve.
Add quality interview problems and unlock one free OA.
Pick. Solve.
Repeat.
Pick
Choose from 2,800+ questions, challenge a friend, or join a group room.
Solve
Write your solution, run test cases and find out where your logic breaks.
Improve
Review results, fix your approach, and come back for the daily problem and Saturday contest.
Something to solve
every single day.
1v1 duels and group OAs are open all week.
Ready for
RoundZero?
2,800+ questions, duels, group OAs and a weekly contest. ₹99 for three months, or earn credits with the daily problem.