Gold medalist Mykhailo Romanchuk of Ukraine(C), silver medalist Maecelo Alberto Acosta of El Salvador(L) and bronze medalist Henrik Christiansen of Norway pose on the podium during the awarding ceremony of Men's 400m Freestyle of Nanjing 2014 Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province, on Aug. 17, 2014. (Xinhua/Zhao Peng)