View Compilation Error

0_0_11494899_32533.cpp:10:29: tr1/unordered_map: No such file or directory
0_0_11494899_32533.cpp:13: error: expected namespace-name before ';' token
0_0_11494899_32533.cpp:13: error: `<type error>' is not a namespace
0_0_11494899_32533.cpp:21: error: expected constructor, destructor, or type conversion before '<' token
0_0_11494899_32533.cpp:21: error: expected `,' or `;' before '<' token
0_0_11494899_32533.cpp: In function `LL Solve()':
0_0_11494899_32533.cpp:128: error: `Hash' undeclared (first use this function)
0_0_11494899_32533.cpp:128: error: (Each undeclared identifier is reported only once for each function it appears in.)