View Compilation Error

0_0_22207835_30288.cpp:47:3: error: 'tu' does not name a type
 } tu;
   ^
0_0_22207835_30288.cpp:82:1: error: expected '}' at end of input
 }
 ^
0_0_22207835_30288.cpp: In member function 'int ConvexHull::main()':
0_0_22207835_30288.cpp:72:13: error: 'tu' was not declared in this scope
         n = tu.graham(n,p,res);
             ^
0_0_22207835_30288.cpp: At global scope:
0_0_22207835_30288.cpp:82:1: error: expected unqualified-id at end of input
 }
 ^