ght: 150%">个好友所在的</span><span style="line-height: 150%">(pi,qi)</span><span style="line-height: 150%">横纵坐标距离不超过</span><span style="line-height: 150%">si</span><span style="line-height: 150%">的所有城市（即</span><span style="line-height: 150%">{(a,b)|max{|a-pi|</span><span style="line-height: 150%">，</span><span style="line-height: 150%">|b-qi|}&lt;=si}</span><span style="line-height: 150%">）中，最晚遭受金融风暴影响的城市开始爆发金融危机的时�