3 years ago,
Team of 3(team's first and last competition together). ICPC ACM Multiprovisional round.
1st question super simple. Teammate came up with the algo.
I was the one who wrote the code. Missed a brace after a 'if' statement.
Wasted 45 mins, debugging and coming up with new approaches. From a possible top 10 rank finish, we got 44th at the end of the competition.
If I wouldn't have done this silly mistake, our team wouldn't have failed.