View Compilation Error

0_0_39561675_9894.cpp: In function 'void smiling::dfs(int)':
0_0_39561675_9894.cpp:123:17: error: 'calc' was not declared in this scope; did you mean 'calloc'?
  123 |                 calc(x);
      |                 ^~~~
      |                 calloc
0_0_39561675_9894.cpp:128:25: error: 'getrt' was not declared in this scope
  128 |                         getrt(y,0,sz[y]);
      |                         ^~~~~
0_0_39561675_9894.cpp: In function 'int smiling::main()':
0_0_39561675_9894.cpp:169:25: error: 'getrt' was not declared in this scope
  169 |                         getrt(1,0,n);
      |                         ^~~~~