View Compilation Error

0_0_6840479_16389.cpp:10: error: expected `;' before "bool"
0_0_6840479_16389.cpp:67: error: integer constant is too large for "long" type
0_0_6840479_16389.cpp: In member function `void Graph::init(int)':
0_0_6840479_16389.cpp:20: error: `ins' undeclared (first use this function)
0_0_6840479_16389.cpp:20: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6840479_16389.cpp: In member function `void Graph::dfs(int)':
0_0_6840479_16389.cpp:36: error: `ins' undeclared (first use this function)
0_0_6840479_16389.cpp: In member function `void Graph::tarjan()':
0_0_6840479_16389.cpp:81: error: `val' undeclared (first use this function)
0_0_6840479_16389.cpp: In function `int main()':
0_0_6840479_16389.cpp:97: error: 'struct Graph' has no member named 'val'