7月29日，选手在信息学奥林匹克竞赛中答题。当日，第29届全国青少年信息学奥林匹克竞赛在江苏省常州高级中学开幕，来自全国30个省、市、区的347名青少年编程高手参赛。比赛包括练习赛、上机竞赛、团体对抗赛等项目，并将举行网上同步赛，为更多编程爱好者提供锻炼交流机会。新华社发（胡平 摄）     July 29,，Players in the Olympic competition informatics answer。On that day，The xxix Olympic competition the national youth informatics in jiangsu changzhou senior middle schools open，From over 30 provinces、city、Of the 347 youth programming ace entry。Games including practice、Computer competition、Groups such as match-ups project，And will hold the online synchronization，For more programming lovers to provide exercise exchange opportunities。The xinhua news agency hair（Woo ping is taken）