answer.code:89:11: error: redefinition of ‘const int maxn’
   89 | const int maxn = 2000005;
      |           ^~~~
answer.code:6:11: note: ‘const int maxn’ previously defined here
    6 | const int maxn = 1000005;
      |           ^~~~
answer.code:90:5: error: redefinition of ‘int n’
   90 | int n,m;
      |     ^
answer.code:7:5: note: ‘int n’ previously declared here
    7 | int n,m;
      |     ^
answer.code:90:7: error: redefinition of ‘int m’
   90 | int n,m;
      |       ^
answer.code:7:7: note: ‘int m’ previously declared here
    7 | int n,m;
      |       ^
answer.code:91:5: error: redefinition of ‘int in [1000005]’
   91 | int in[maxn],out[maxn],ans[maxn];
      |     ^~
answer.code:8:5: note: ‘int in [1000005]’ previously declared here
    8 | int in[maxn],out[maxn],ans[maxn];
      |     ^~
answer.code:91:14: error: redefinition of ‘int out [1000005]’
   91 | int in[maxn],out[maxn],ans[maxn];
      |              ^~~
answer.code:8:14: note: ‘int out [1000005]’ previously declared here
    8 | int in[maxn],out[maxn],ans[maxn];
      |              ^~~
answer.code:91:24: error: redefinition of ‘int ans [1000005]’
   91 | int in[maxn],out[maxn],ans[maxn];
      |                        ^~~
answer.code:8:24: note: ‘int ans [1000005]’ previously declared here
    8 | int in[maxn],out[maxn],ans[maxn];
      |                        ^~~
answer.code:92:12: error: redefinition of ‘std::vector<int> pos [1000005]’
   92 | vector<int>pos[maxn],g[maxn];
      |            ^~~
answer.code:9:12: note: ‘std::vector<int> pos [1000005]’ previously defined here
    9 | vector<int>pos[maxn],g[maxn];
      |            ^~~
answer.code:92:22: error: redefinition of ‘std::vector<int> g [1000005]’
   92 | vector<int>pos[maxn],g[maxn];
      |                      ^
answer.code:9:22: note: ‘std::vector<int> g [1000005]’ previously defined here
    9 | vector<int>pos[maxn],g[maxn];
      |                      ^
answer.code:93:11: error: redefinition of ‘std::queue<int> que’
   93 | queue<int>que;
      |           ^~~
answer.code:10:11: note: ‘std::queue<int> que’ previously declared here
   10 | queue<int>que;
      |           ^~~
answer.code:94:6: error: redefinition of ‘void update()’
   94 | void update(){
      |      ^~~~~~
answer.code:11:6: note: ‘void update()’ previously defined here
   11 | void update(){
      |      ^~~~~~
answer.code:98:6: error: redefinition of ‘void bfs()’
   98 | void bfs(){
      |      ^~~
answer.code:16:6: note: ‘void bfs()’ previously defined here
   16 | void bfs(){
      |      ^~~
answer.code:111:6: error: redefinition of ‘void init()’
  111 | void init(){
      |      ^~~~
answer.code:29:6: note: ‘void init()’ previously defined here
   29 | void init(){
      |      ^~~~
answer.code:157:5: error: redefinition of ‘int main()’
  157 | int main(){
      |     ^~~~
answer.code:75:5: note: ‘int main()’ previously defined here
   75 | int main(){
      |     ^~~~