Young Mathematician Olympiad, 2022-2023, Stage A, Grades 4-5

注讚 砖讛砖讗诇讜转 讬讜讻谞住讜 诇讗转专, 谞讬转谉 诇专讗讜转 讗转 讛砖讗诇讜谉 讛诪拽讜专讬 讻讗谉