public void LoadUserData(LimpUser user) { ResponseContainer <List <Submission> > response = CodeforcesClient .User .Status(user.CodeforcesHandle) .Result; response.ThrowExceptionIfFailed(); IEnumerable <Submission> okSubmission = response .Result .Where(s => s.Verdict == SubmissionVerdictEnum.Ok); IEnumerable <string> solvedProblems = okSubmission .Select(s => $"{s.Problem.ContestId}{s.Problem.Index}") .Distinct(); user.CodeforcesSubmissions = solvedProblems.ToList(); }