View Compilation Error

0_0_36457759_13337.cpp: In function 'void tree_change(long long int, long long int, long long int)':
0_0_36457759_13337.cpp:78:4: error: 'p1' was not declared in this scope
    p1-=deep[top[u]]-deep[u];
    ^
0_0_36457759_13337.cpp:87:4: error: 'p2' was not declared in this scope
    p2+=deep[top[v]]-deep[v];
    ^
0_0_36457759_13337.cpp:97:3: error: 'p2' was not declared in this scope
   p2+=deep[u]-deep[v];
   ^
0_0_36457759_13337.cpp:104:3: error: 'p1' was not declared in this scope
   p1-=deep[v]-deep[u];
   ^