0_0_33815200_27131.cpp: In function 'void dfs(int)':
0_0_33815200_27131.cpp:75:13: error: 'lsz' was not declared in this scope
g[u]=mul(C(lsz+rsz,lsz),mul(g[tr[u].ls],g[tr[u].rs]));
^
0_0_33815200_27131.cpp:75:17: error: 'rsz' was not declared in this scope
g[u]=mul(C(lsz+rsz,lsz),mul(g[tr[u].ls],g[tr[u].rs]));
^
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