View Compilation Error

0_0_36458088_22018.cpp: In function 'void tree_change(long long int, long long int, long long int)':
0_0_36458088_22018.cpp:101:22: error: 'id' was not declared in this scope
      long long val = id[x] - l;
                      ^
0_0_36458088_22018.cpp:101:25: error: 'x' was not declared in this scope
      long long val = id[x] - l;
                         ^
0_0_36458088_22018.cpp:108:22: error: 'id' was not declared in this scope
      long long val = id[y] + r;
                      ^
0_0_36458088_22018.cpp:108:25: error: 'y' was not declared in this scope
      long long val = id[y] + r;
                         ^