0_0_32945760_10853.cpp:5:1: error: expected unqualified-id before '?' token
?
^
0_0_32945760_10853.cpp: In function 'int find(int)':
0_0_32945760_10853.cpp:9:12: error: 'f' was not declared in this scope
if(x!=f[x]) f[x]=find(f[x]);
^
0_0_32945760_10853.cpp: At global scope:
0_0_32945760_10853.cpp:12:1: error: expected unqualified-id before '?' token
?
^
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