answer.code:2:17: error: ‘IO’ is not a namespace-name
    2 | using namespace IO;
      |                 ^~
answer.code:6:1: error: ‘vector’ does not name a type
    6 | vector<int> A,B,res,tmp,num,chk,ans;
      | ^~~~~~
answer.code: In function ‘void qry()’:
answer.code:9:9: error: ‘res’ was not declared in this scope
    9 |         res.clear();
      |         ^~~
answer.code:10:17: error: ‘A’ was not declared in this scope
   10 |         res=ask(A,B);
      |                 ^
answer.code:10:19: error: ‘B’ was not declared in this scope
   10 |         res=ask(A,B);
      |                   ^
answer.code: In function ‘int get_max(int)’:
answer.code:15:13: error: ‘i’ was not declared in this scope
   15 |         rep(i,0,siz-1) rep(j,0,i-1) mx[i][j]=tmp[++top];
      |             ^
answer.code:15:9: error: ‘rep’ was not declared in this scope
   15 |         rep(i,0,siz-1) rep(j,0,i-1) mx[i][j]=tmp[++top];
      |         ^~~
answer.code:18:17: error: ‘chk’ was not declared in this scope
   18 |         int ret=chk[pos];
      |                 ^~~
answer.code:19:21: error: ‘tmp’ was not declared in this scope; did you mean ‘top’?
   19 |         chk.clear();tmp.clear();
      |                     ^~~
      |                     top
answer.code: In function ‘void solve(int, int)’:
answer.code:23:17: error: ‘num’ was not declared in this scope; did you mean ‘enum’?
   23 |         int tot=num.size(),bl=tot/len;
      |                 ^~~
      |                 enum
answer.code:24:12: error: ‘bl’ was not declared in this scope
   24 |         if(bl==1){
      |            ^~
answer.code:25:21: error: ‘i’ was not declared in this scope
   25 |                 rep(i,0,tot-1)rep(j,0,i-1) A.pb(num[i]),B.pb(num[j]);
      |                     ^
answer.code:25:17: error: ‘rep’ was not declared in this scope
   25 |                 rep(i,0,tot-1)rep(j,0,i-1) A.pb(num[i]),B.pb(num[j]);
      |                 ^~~
answer.code:36:21: error: ‘i’ was not declared in this scope
   36 |                 rep(i,1,bl){
      |                     ^
answer.code:36:25: error: ‘bl’ was not declared in this scope; did you mean ‘l’?
   36 |                 rep(i,1,bl){
      |                         ^~
      |                         l
answer.code:36:17: error: ‘rep’ was not declared in this scope
   36 |                 rep(i,1,bl){
      |                 ^~~
answer.code:54:21: error: ‘i’ was not declared in this scope
   54 |                 rep(i,1,n){
      |                     ^
answer.code:54:17: error: ‘rep’ was not declared in this scope
   54 |                 rep(i,1,n){
      |                 ^~~
answer.code:62:25: error: ‘bl’ was not declared in this scope; did you mean ‘l’?
   62 |                 rep(i,1,bl){
      |                         ^~
      |                         l
answer.code:70:13: error: ‘ans’ was not declared in this scope
   70 |         num=ans;
      |             ^~~
answer.code: In function ‘int richest(int, int, int)’:
answer.code:75:13: error: ‘i’ was not declared in this scope
   75 |         rep(i,0,n-1) num.pb(i);
      |             ^
answer.code:75:9: error: ‘rep’ was not declared in this scope
   75 |         rep(i,0,n-1) num.pb(i);
      |         ^~~
answer.code:87:16: error: ‘num’ was not declared in this scope; did you mean ‘enum’?
   87 |         return num[0];
      |                ^~~
      |                enum