View Compilation Error

0_0_32862832_13500.cpp: In function 'int main()':
0_0_32862832_13500.cpp:69:30: error: expected primary-expression before '<' token
   memset(vis,0,sizeof(vis)); <span> </span>//一定要初始化，不然全部被标记后来就找不到了，while一直循环
                              ^
0_0_32862832_13500.cpp:69:31: error: 'span' was not declared in this scope
   memset(vis,0,sizeof(vis)); <span> </span>//一定要初始化，不然全部被标记后来就找不到了，while一直循环
                               ^
0_0_32862832_13500.cpp:69:37: error: expected primary-expression before '<' token
   memset(vis,0,sizeof(vis)); <span> </span>//一定要初始化，不然全部被标记后来就找不到了，while一直循环
                                     ^
0_0_32862832_13500.cpp:69:38: error: expected primary-expression before '/' token
   memset(vis,0,sizeof(vis)); <span> </span>//一定要初始化，不然全部被标记后来就找不到了，while一直循环
                                      ^
0_0_32862832_13500.cpp:70:3: error: expected primary-expression before 'if'
   if(n>=m) 
   ^
0_0_32862832_13500.cpp:72:3: error: 'else' without a previous 'if'
   else
   ^