View Compilation Error

0_0_38993426_1160.cpp: In function 'int solve()':
0_0_38993426_1160.cpp:155:10: error: 'cln' was not declared in this scope
  155 |          cln >> n;
      |          ^~~
0_0_38993426_1160.cpp:162:12: error: expected initializer before ':' token
  162 | Plg square : = {
      |            ^
0_0_38993426_1160.cpp:168:12: error: expected initializer before ':' token
  168 | auto iplgs : = search(square,0,0);
      |            ^
0_0_38993426_1160.cpp:170:31: error: 'iplgs' was not declared in this scope
  170 |          return connected_cnt(iplgs);
      |                               ^~~~~