0_0_24033118_3210.cpp:4:6: error: expected nested-name-specifier before '?' token
using?namespace?std;??
^
0_0_24033118_3210.cpp:4:21: error: expected unqualified-id before '?' token
using?namespace?std;??
^
0_0_24033118_3210.cpp:5:22: error: expected unqualified-id before '?' token
typedef?long?long?ll;??
^
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