0_0_11096942_15121.cpp:3: error: `usingnamespace' does not name a type
0_0_11096942_15121.cpp: In function `void Tarjan(int)':
0_0_11096942_15121.cpp:36: error: `elseif' undeclared (first use this function)
0_0_11096942_15121.cpp:36: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11096942_15121.cpp:36: error: expected `;' before '{' token
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