metrics/source/plugins/leetcode/queries/problems.graphql

query Problems ($username: String!) {
  allQuestionsCount {
    difficulty
    count
  }
  matchedUser(username: $username) {
    problemsSolvedBeatsStats {
      difficulty
      percentage
    }
    submitStatsGlobal {
      acSubmissionNum {
        difficulty
        count
      }
    }
  }
}