pt; line-height: 150%">行，每行包含三个整数</span><span style="font-size: 12pt; line-height: 150%"> p,q,r</span><span style="font-size: 12pt; line-height: 150%">，表示该城市三角形的三个顶点的编号</span><span style="font-size: 12pt; line-height: 150%">(T</span><span style="font-size: 12pt; line-height: 150%">国的</span><span style="font-size: 12pt; line-height: 150%">N</span><span style="font-size: 12pt; line-height: 150%">个顶点按顺时间方向从</span><span style="font-si