answer.code:234:11: error: redefinition of ‘const long long int mod’
  234 | const int mod=998244353;
      |           ^~~
answer.code:28:11: note: ‘const long long int mod’ previously defined here
   28 | const int mod=998244353;
      |           ^~~
answer.code:235:11: error: redefinition of ‘const long long int inf’
  235 | const int inf=0x3f3f3f3f;
      |           ^~~
answer.code:29:11: note: ‘const long long int inf’ previously defined here
   29 | const int inf=0x3f3f3f3f;
      |           ^~~
answer.code:236:11: error: redefinition of ‘const long long int INF’
  236 | const int INF=1e18;
      |           ^~~
answer.code:30:11: note: ‘const long long int INF’ previously defined here
   30 | const int INF=1e18;
      |           ^~~
answer.code:237:5: error: redefinition of ‘long long int N’
  237 | int N,K,Q,T;
      |     ^
answer.code:31:5: note: ‘long long int N’ previously declared here
   31 | int N,K,Q,T;
      |     ^
answer.code:237:7: error: redefinition of ‘long long int K’
  237 | int N,K,Q,T;
      |       ^
answer.code:31:7: note: ‘long long int K’ previously declared here
   31 | int N,K,Q,T;
      |       ^
answer.code:237:9: error: redefinition of ‘long long int Q’
  237 | int N,K,Q,T;
      |         ^
answer.code:31:9: note: ‘long long int Q’ previously declared here
   31 | int N,K,Q,T;
      |         ^
answer.code:237:11: error: redefinition of ‘long long int T’
  237 | int N,K,Q,T;
      |           ^
answer.code:31:11: note: ‘long long int T’ previously declared here
   31 | int N,K,Q,T;
      |           ^
answer.code:238:8: error: redefinition of ‘struct Segtree’
  238 | struct Segtree
      |        ^~~~~~~
answer.code:32:8: note: previous definition of ‘struct Segtree’
   32 | struct Segtree
      |        ^~~~~~~
answer.code:269:2: error: conflicting declaration ‘int st’
  269 | }st;
      |  ^~
answer.code:63:2: note: previous declaration as ‘Segtree st’
   63 | }st;
      |  ^~
answer.code:270:14: error: redefinition of ‘std::vector<long long int> g [2][1000005]’
  270 | vector <int> g[2][1000005],sel;
      |              ^
answer.code:64:14: note: ‘std::vector<long long int> g [2][1000005]’ previously defined here
   64 | vector <int> g[2][1000005],sel;
      |              ^
answer.code:270:28: error: redefinition of ‘std::vector<long long int> sel’
  270 | vector <int> g[2][1000005],sel;
      |                            ^~~
answer.code:64:28: note: ‘std::vector<long long int> sel’ previously defined here
   64 | vector <int> g[2][1000005],sel;
      |                            ^~~
answer.code:271:5: error: redefinition of ‘long long int rt [2]’
  271 | int rt[2];
      |     ^~
answer.code:65:5: note: ‘long long int rt [2]’ previously declared here
   65 | int rt[2];
      |     ^~
answer.code:272:8: error: redefinition of ‘struct LCA’
  272 | struct LCA
      |        ^~~
answer.code:66:8: note: previous definition of ‘struct LCA’
   66 | struct LCA
      |        ^~~
answer.code:308:2: error: conflicting declaration ‘int Lca’
  308 | }Lca;
      |  ^~~
answer.code:102:2: note: previous declaration as ‘LCA Lca’
  102 | }Lca;
      |  ^~~
answer.code:310:5: error: redefinition of ‘long long int dfn [2][1000005]’
  310 | int dfn[2][1000005];
      |     ^~~
answer.code:104:5: note: ‘long long int dfn [2][1000005]’ previously declared here
  104 | int dfn[2][1000005];
      |     ^~~
answer.code:311:5: error: redefinition of ‘long long int clk’
  311 | int clk,pos[1000005];
      |     ^~~
answer.code:105:5: note: ‘long long int clk’ previously declared here
  105 | int clk,pos[1000005];
      |     ^~~
answer.code:311:9: error: redefinition of ‘long long int pos [1000005]’
  311 | int clk,pos[1000005];
      |         ^~~
answer.code:105:9: note: ‘long long int pos [1000005]’ previously declared here
  105 | int clk,pos[1000005];
      |         ^~~
answer.code:312:6: error: redefinition of ‘bool cmp(long long int, long long int)’
  312 | bool cmp(int x,int y)
      |      ^~~
answer.code:106:6: note: ‘bool cmp(long long int, long long int)’ previously defined here
  106 | bool cmp(int x,int y)
      |      ^~~
answer.code:316:6: error: redefinition of ‘void dfs(long long int, long long int, long long int)’
  316 | void dfs(int id,int u,int par)
      |      ^~~
answer.code:110:6: note: ‘void dfs(long long int, long long int, long long int)’ previously defined here
  110 | void dfs(int id,int u,int par)
      |      ^~~
answer.code:326:5: error: redefinition of ‘long long int dep [1000005]’
  326 | int dep[1000005];
      |     ^~~
answer.code:120:5: note: ‘long long int dep [1000005]’ previously declared here
  120 | int dep[1000005];
      |     ^~~
answer.code:327:15: error: redefinition of ‘std::vector<std::pair<long long int, long long int> > h [1000005]’
  327 | vector <pii > h[1000005];
      |               ^
answer.code:121:15: note: ‘std::vector<std::pair<long long int, long long int> > h [1000005]’ previously defined here
  121 | vector <pii > h[100...