View Compilation Error

0_0_36457767_16337.cpp: In function 'void tree_change(long long int, long long int, long long int)':
0_0_36457767_16337.cpp:97:3: error: 'p2' was not declared in this scope
   p2+=deep[u]-deep[v];
   ^
0_0_36457767_16337.cpp:104:3: error: 'p1' was not declared in this scope
   p1-=deep[v]-deep[u];
   ^