amir hossein vahidi tabar, silver medal of the world computer olympiad . respected and dear families of these elites and these medal winners are also among us . give a special encouragement to the families. they work very hard at work. mrs. fatemeh tamhari, silver medalist of the world computer olympiad, mashallah. dear mr. sohail mohammad khani , the silver medal of the world computer olympiad and the world olympiad of astronomy and astrophysics, please give special encouragement to all dear ones, and mr. amir mahdi esmaili taheri, the gold medal of the world astronomy olympiad. his excellency mr. mahdi, ostad mohammadi, gold medal of the world astronomy olympiad in physics, mr. arvin rasulzadeh , gold medal of the world astronomy olympiad, mr. seyed amir hossein mousavi. silver medal of the world astronomy olympiad and mrs. sarina farzad naseb, silver medalist of the world astronomy olympiad. congratulations, shine in the sky of science and culture of this land, all my dear ones , please come and take a memorable photo next to mr. dr. raisi. dear preside