View Compilation Error

0_0_15622963_23037.cpp:128:0: error: unterminated argument list invoking macro "sz"
  for (i = sz(con[u
 ^
0_0_15622963_23037.cpp: In function 'void DFS(int, int)':
0_0_15622963_23037.cpp:128:11: error: 'sz' was not declared in this scope
  for (i = sz(con[u
           ^
0_0_15622963_23037.cpp:128:11: error: expected primary-expression at end of input
0_0_15622963_23037.cpp:128:11: error: expected ';' at end of input
0_0_15622963_23037.cpp:128:11: error: expected primary-expression at end of input
0_0_15622963_23037.cpp:128:11: error: expected ')' at end of input
0_0_15622963_23037.cpp:128:11: error: expected statement at end of input
0_0_15622963_23037.cpp:128:11: error: expected '}' at end of input