View Compilation Error

0_0_39105810_26100.cpp: In function 'void work()':
0_0_39105810_26100.cpp:15:48: error: 'j' was not declared in this scope
   15 |         for(int i=1;i<=n;i++)scanf("%lld%lld",&j,&z),dpp(j,z);
      |                                                ^
0_0_39105810_26100.cpp:15:51: error: 'z' was not declared in this scope
   15 |         for(int i=1;i<=n;i++)scanf("%lld%lld",&j,&z),dpp(j,z);
      |                                                   ^