<span style="color:rgba(0&#44;   0&#44;   0&#44;   0.87);font-family:Lato&#44;   "font-size:14px;white-space:normal;background-color:#FFFFFF;">1277:</span><a href="http://116.62.168.107/problem.php?id=1277" target="_blank" style="box-sizing:inherit;color:#4183C4;text-decoration-line:none;background-color:#FFFFFF;font-family:Lato&#44;   "font-size:14px;white-space:normal;">最短路径</a><br style="box-sizing:inherit;color:rgba(0&#44;   0&#44;   0&#44;   0.87);font-family:Lato&#44;   "font-size:14px;white-space:normal;background-color:#FFFFFF;" />

<span style="color:rgba(0, 0, 0, 0.87);font-family:Lato, "font-size:14px;white-space:normal;background-color:#FFFFFF;">1284:</span><a href="http://116.62.168.107/problem.php?id=1284" target="_blank" style="box-sizing:inherit;color:#4183C4;text-decoration-line:none;background-color:#FFFFFF;font-family:Lato, "font-size:14px;white-space:normal;">最短距离和路径问题</a><br style="box-sizing:inherit;color:rgba(0, 0, 0, 0.87);font-family:Lato, "font-size:14px;white-space:normal;background-color:#FFFFFF;" /> <span style="color:rgba(0, 0, 0, 0.87);font-family:Lato, "font-size:14px;white-space:normal;background-color:#FFFFFF;">1286:</span><a href="http://116.62.168.107/problem.php?id=1286" target="_blank" style="box-sizing:inherit;color:#4183C4;text-decoration-line:none;background-color:#FFFFFF;font-family:Lato, "font-size:14px;white-space:normal;">城市之间的最短路</a><br style="box-sizing:inherit;color:rgba(0, 0, 0, 0.87);font-family:Lato, "font-size:14px;white-space:normal;background-color:#FFFFFF;" />

<span style="color:rgba(0&#44;   0&#44;   0&#44;   0.87);font-family:Lato&#44;   "font-size:14px;white-space:normal;background-color:#FFFFFF;">1272:</span><a href="http://116.62.168.107/problem.php?id=1272" target="_blank" style="box-sizing:inherit;color:#4183C4;text-decoration-line:none;background-color:#FFFFFF;font-family:Lato&#44;   "font-size:14px;white-space:normal;">最少交通费</a>

学完邻接表之后，对以上题目进行改写。