criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
int n;
cin>>n;
cout << 0 << endl;
string s;
cin>>s;
string t = s;
int p=0;
if(s=="Vacant") return 0;
int ng = 0; //「index = 0」が条件を満たすこともあるので、初期値は -1
int ok = n;
else{
rep(i,20){
int ng = 0; //「index = 0」が条件を満たすこともあるので、初期値は -1
int ok = n; // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()
int mid = (ok + ng) / 2;
cout << mid << endl;
cin >> s;
if(s=="Vacant") break;
else if((p%2==mid%2&&s==t)||(p%2!=mid%2&&s!=t)){
       ng = mid;}
else ok =mid;
p =mid;}
return 0;}}


Compiler output:
a.cc: In function 'int main()':
a.cc:46:1: error: 'else' without a previous 'if'
   46 | else{
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
int n;
cin>>n;
cout << 0 << endl;
string s;
cin>>s;
string t = s;
int p=0;
if(s=="Vacant") return 0;
else{
rep(i,20);
int ng = 0; //「index = 0」が条件を満たすこともあるので、初期値は -1
int ok = n; // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()
int mid = (ok + ng) / 2;
cout << mid << endl;
cin >> s;
if(s=="Vacant") break;
else if((p%2==mid%2&&s==t)||(p%2!=mid%2&&s!=t)){
       ng = mid;}
else ok =mid;
p =mid;}
return 0;}}


Compiler output:
a.cc: In function 'int main()':
a.cc:51:17: error: break statement not within loop or switch
   51 | if(s=="Vacant") break;
      |                 ^~~~~
a.cc: At global scope:
a.cc:56:11: error: expected declaration before '}' token
   56 | return 0;}}
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
int n;
cin>>n;
cout << 0 << endl;
string s;
cin>>s;
string t = s;
int p=0;
if(s=="Vacant") return 0;
else{
while(1){
int ng = 0; //「index = 0」が条件を満たすこともあるので、初期値は -1
int ok = n; // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()
int mid = (ok + ng) / 2;
cout << mid << endl;
cin >> s;
if(s=="Vacant") break;
else if((p%2==mid%2&&s==t)||(p%2!=mid%2&&s!=t)){
       ng = mid;}
else ok =mid;
p =mid;}
return 0;}


Compiler output:
a.cc: In function 'int main()':
a.cc:56:11: error: expected '}' at end of input
   56 | return 0;}
      |           ^
a.cc:35:12: note: to match this '{'
   35 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using ll = long long;
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
int n;
cin>>n;
cout << 0 << endl;
string s;
cin>>s;
string t = s;
int p=0;
if(s=="Vacant") return 0;
else{
while(1){
int ng = 0; //「index = 0」が条件を満たすこともあるので、初期値は -1
int ok = n; // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()
int mid = (ok + ng) / 2;
cout << mid << endl;
cin >> s;
if(s=="Vacant") break;
else if((p%2==mid%2&&s==t)||(p%2!=mid%2&&s!=t)){
       ng = mid;}
else ok =mid;
p =mid;}
return 0;}


Compiler output:
a.cc:12:17: error: 'll' was not declared in this scope; did you mean 'all'?
   12 | using vl=vector<ll>;
      |                 ^~
      |                 all
a.cc:12:19: error: template argument 1 is invalid
   12 | using vl=vector<ll>;
      |                   ^
a.cc:12:19: error: template argument 2 is invalid
a.cc:13:25: error: 'll' was not declared in this scope; did you mean 'all'?
   13 | using vvl=vector<vector<ll>>;
      |                         ^~
      |                         all
a.cc:13:25: error: template argument 1 is invalid
a.cc:13:25: error: template argument 2 is invalid
a.cc:13:27: error: template argument 1 is invalid
   13 | using vvl=vector<vector<ll>>;
      |                           ^~
a.cc:13:27: error: template argument 2 is invalid
a.cc:14:7: error: 'll' does not name a type; did you mean 'all'?
   14 | const ll MOD=1000000007;
      |       ^~
      |       all
a.cc:15:7: error: 'll' does not name a type; did you mean 'all'?
   15 | const ll MOD9=998244353;
      |       ^~
      |       all
a.cc:17:7: error: 'll' does not name a type; did you mean 'all'?
   17 | const ll INF=4e18;
      |       ^~
      |       all
a.cc:18:7: error: 'll' does not name a type; did you mean 'all'?
   18 | const ll dy[8]={1,0,-1,0,1,1,-1,-1};
      |       ^~
      |       all
a.cc:19:7: error: 'll' does not name a type; did you mean 'all'?
   19 | const ll dx[8]={0,-1,0,1,1,-1,1,-1};
      |       ^~
      |       all
a.cc: In function 'int main()':
a.cc:56:11: error: expected '}' at end of input
   56 | return 0;}
      |           ^
a.cc:35:12: note: to match this '{'
   35 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
bool isOK(int index, int key) {
    if (a[index] >= key) return true;
    else return false;
}

// 汎用的な二分探索のテンプレ
int binary_search(int key) {
    int ng = -1; //「index = 0」が条件を満たすこともあるので、初期値は -1
    int ok = (int)a.size(); // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()

    /* ok と ng のどちらが大きいかわからないことを考慮 */
    while (abs(ok - ng) > 1) {
        int mid = (ok + ng) / 2;

        if (isOK(mid, key)) ok = mid;
        else ng = mid;
    }
    return ok;
}
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
ll n;
cin>>n;
cout << 0 << endl;


Compiler output:
a.cc: In function 'bool isOK(int, int)':
a.cc:9:9: error: 'a' was not declared in this scope
    9 |     if (a[index] >= key) return true;
      |         ^
a.cc: In function 'int binary_search(int)':
a.cc:16:19: error: 'a' was not declared in this scope
   16 |     int ok = (int)a.size(); // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()
      |                   ^
a.cc: In function 'int main()':
a.cc:40:19: error: expected '}' at end of input
   40 | cout << 0 << endl;
      |                   ^
a.cc:37:12: note: to match this '{'
   37 | int main() {
      |            ^
a.cc: In function 'bool isOK(int, int)':
a.cc:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int N,temp,T;
  cin>>N;
  int A[N];
  try=0;
  cout<<T<<endl;
  cin>>temp;
  if(temp=="Vacant"){
    return 0;
  }
  if(temp=="Male"){
    A[T]=1;
  }
  if(temp=="Female"){
    A[T]=2;
  }
  int l=N-1;
  int r=0;
  int flag=1;
  while(1){
    if(flag){
      T=l/2;
    }
    else{
      T=(l-r)/2;
    }
    cout<<T<<endl;
    cin>>temp;
    if(temp=="Vacant"){
      return 0;
    }
    if(temp=="Male"){
      A[T]=1;
    }
    if(temp=="Female"){
      A[T]=2;
    }
    if(A[T]==A[r]){
      r=T+1;
      flag=1;
    }
    if(A[T]!=A[r]){
      l=T;
      flag=0;
    } 
  } 
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: expected '{' before '=' token
    8 |   try=0;
      |      ^
a.cc:8:6: error: expected 'catch' before '=' token
a.cc:8:6: error: expected '(' before '=' token
    8 |   try=0;
      |      ^
      |      (
a.cc:8:6: error: expected type-specifier before '=' token
a.cc:8:6: error: expected ')' before '=' token
    8 |   try=0;
      |      ^
      |      )
a.cc:8:6: error: expected '{' before '=' token
a.cc:8:6: error: expected primary-expression before '=' token
a.cc:11:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |   if(temp=="Vacant"){
      |      ~~~~^~~~~~~~~~
a.cc:14:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   14 |   if(temp=="Male"){
      |      ~~~~^~~~~~~~
a.cc:17:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   17 |   if(temp=="Female"){
      |      ~~~~^~~~~~~~~~
a.cc:32:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   32 |     if(temp=="Vacant"){
      |        ~~~~^~~~~~~~~~
a.cc:35:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   35 |     if(temp=="Male"){
      |        ~~~~^~~~~~~~
a.cc:38:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   38 |     if(temp=="Female"){
      |        ~~~~^~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for (int i = 0; i < n; i++)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOR(i, m, n) for (int i = m; i < n; i++)
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
string vac = "Vacant";

bool chk(string sl, string sr, int left, int right)
{
  if(sl==sr) return (right-left)%2==1;
  else return (right-left)%2==0;
}

int main()
{
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n; cin >> n;
  int left = 0, right = n/2;
  string sl, sr, str;
  cout << left << endl;
  cin >> sl;
  if(sl==vac) return 0;
  cout << right << endl;
  cin >> sr;
  if(sr==vac) return 0;
  
  if(!chk(sl,sr,left,right)){
    swap(sl,sr);
    left = right;
    eight n;
  }
  
  while((right-left)>1){
    int mid = (right+left)/2;
    cout << mid << endl;
    cin >> str;
    if(str==vac) return 0;
    if(chk(sl,str,left,right)){
      sr = str;
      right = mid;
    }else{
      sl = str;
      left = mid;
    }
  }

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:5: error: 'eight' was not declared in this scope; did you mean 'right'?
   33 |     eight n;
      |     ^~~~~
      |     right
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for (int i = 0; i < n; i++)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOR(i, m, n) for (int i = m; i < n; i++)
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
string vac = "Vacant";

bool chk(string sl, string sr, int left, int right)
{
  if(sl==sr) return (right-left)%2==1;
  else return (right-left)%2==0;

int main()
{
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n; cin >> n;
  int left = 0, right = n/2;
  string sl, sr, str;
  cout << left << endl;
  cin >> sl;
  if(sl==vac) return 0;
  cout << right << endl;
  cin >> sr;
  if(sr==vac) return 0;
  
  if(!chk(sl,sr,left,right)){
    swap(sl,sr);
    left = right;
    eight n;
  }
  
  while((right-left)>1){
    int mid = (right+left)/2;
    cout << mid << endl;
    cin >> str;
    if(str==vac) return 0;
    if(chk(sl,str,left,right)){
      sr = str;
      right = mid;
    }else{
      sl = str;
      left = mid;
    }
  }

  return 0;
}


Compiler output:
a.cc: In function 'bool chk(std::string, std::string, int, int)':
a.cc:15:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   15 | int main()
      |         ^~
a.cc:15:9: note: remove parentheses to default-initialize a variable
   15 | int main()
      |         ^~
      |         --
a.cc:15:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:16:1: error: a function-definition is not allowed here before '{' token
   16 | {
      | ^
a.cc:50:2: error: expected '}' at end of input
   50 | }
      |  ^
a.cc:11:1: note: to match this '{'
   11 | {
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int main() {
  int N;
  cin >> N;
  string res[N];
  cout << 0 << endl;
  string s;
  cin >> s;
  int left = -1;
  int right = -1;
  if (s == "Vacant") return 0;
  cout << N - 1 << endl;
  string t;
  cin >> t;
  if (t == "Vacant") return 0;
  res[0] = s;
  res[N - 1] = t;
  left = 0;
  right = N - 1;
  int cnt = 2;
  while (0 == 0) {
    cnt++;
    int mid = (left + right) / 2;
    cout << mid << endl;
    string str;
    cin >> str;
    res[mid] = str;
    if (str == "Vacant") return 0;
    int lr = mid - left + 1;
    int rr = right - mid + 1;
    if ((lr % 2 == 1 && res[mid] != mid[left]) || lr % 2 == 0 && res[mid] == mid[left]) {
      right = mid;
    } else {
      left = mid;
    }
    if (cnt == 20) {
      return 0;
    }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:40: error: invalid types 'int[int]' for array subscript
   36 |     if ((lr % 2 == 1 && res[mid] != mid[left]) || lr % 2 == 0 && res[mid] == mid[left]) {
      |                                        ^
a.cc:36:81: error: invalid types 'int[int]' for array subscript
   36 |     if ((lr % 2 == 1 && res[mid] != mid[left]) || lr % 2 == 0 && res[mid] == mid[left]) {
      |                                                                                 ^
Language: C++

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <regex>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <valarray>
#include <vector>
using namespace std;

using ll = long long;
using ld = long double;
const int INF = 1e9;
const double EPS = 1e-9;
const ll MOD = 1e9 + 7;

bool betemp(string sleft, string sright, int left, int right)
{
  if (sleft == sright)
    return (right - left) % 2 == 1;
  else
    return (right - left) % 2 == 0;
}

int main()
{
  int N;
  cin >> N;

  string vac = "Vacant";
  string sl, sr, s;
  int l = 0, r = N - 1;
  cout << l << endl;
  cin >> sl;
  if (sl == vac)
    return;
  cout << r << endl;
  cin >> sr;
  if (sr == vac)
    return;

  while (r - l > 1)
  {
    int m = (l + r) / 2;
    cout << m << endl;
    cin >> s;
    if (betemp(sl, s, l, m))
      sr = s, r = m;
    else
      sl = s, l = m;
  }

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:58:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
   58 |     return;
      |     ^~~~~~
a.cc:62:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
   62 |     return;
      |     ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int main() {
  int N;
  cin >> N;
  string res[N+1];
  cout << 0 << endl;
  string s;
  cin >> s;
  int left = -1;
  int right = -1;
  if (s == "Vacant") return 0;
  int halfN = (N - 1) / 2;
  cout << halfN << endl;
  string t;
  cin >> t;
  if (t == "Vacant") return 0;
  res[0] = s;
  res[N] = s;
  res[halfN] = t;
  if (s == t) {
    left = 0;
    right = halfN;
  } else {
    left = halfN;
    right = N;
  }
  int cnt = 2;
  while (0 == 0) {
    cnt++;
    int mid = (left + right) / 2;
    cout << mid << endl;
    string str;
    cin >> str;
    res[mid] = str;
    if (str == Vacant) return 0;
    int p = (mid-left) % 2;
    if (p == 0 && res[left] == res[mid]) {
      left = mid;
    } else if (p == 0 && res[left] != res[mid]) {
      right = mid;
    } else if (p == 1 && res[left] == res[mid]) {
      left = mid;
    } else {
      right = mid;
    }
    if (cnt == 18) {
      return 0;
    }
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:16: error: 'Vacant' was not declared in this scope
   40 |     if (str == Vacant) return 0;
      |                ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int N; cin >> N;
  
  int a=0;
  int b=N-1;
  
  cout << 0 << endl;
  cout << flush;
  
  string sa; cin >> sa;
  
  int x=N/2-(N/2)%2;
  while(1){
    cout << x << endl;
    cout << flush;
    
    string s;
    cin >> s;
    
    if(s=="Vacant"){
      return;
    }else if(s==xa){
      a=x;
    }else{
      b=x-1;
    }
    x=(b+a+1)/2-(b+a+1)%2
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:7: error: return-statement with no value, in function returning 'int' [-fpermissive]
   24 |       return;
      |       ^~~~~~
a.cc:25:17: error: 'xa' was not declared in this scope; did you mean 'x'?
   25 |     }else if(s==xa){
      |                 ^~
      |                 x
a.cc:30:26: error: expected ';' before '}' token
   30 |     x=(b+a+1)/2-(b+a+1)%2
      |                          ^
      |                          ;
   31 |   }
      |   ~
Language: Java

	import java.util.*;
	import java.util.Map.Entry;
	 
	 
	 class Main {
		 static int mod =  (int) (Math.pow(10,9)+7);
//		 static int mod =  (int) 998244353;
		 public static void main(String[] args) {
	    	
	        Scanner sc = new Scanner(System.in);
 
	        int N = sc.nextInt();
	        System.out.println(N-1);
        	String NS = sc.next();
	        System.out.println(0);
	        String RS=sc.next();
        	if(NS.equals("Vacant"))return;
        	if(RS.equals("Vacant"))return;
	        int R=0;
	        N=N-1;
	        for(int i=0;i<25;i++) {
	        	int mid = (N+R)/2;
	        	System.out.println(mid);
	        	String tmp = sc.next();
	        	if(tmp.equals("Vacant"))return;
	        	if(((mid-R)%2==1&&!RS.equals(tmp)) || ((mid-R)%2==0&&RS.equals(tmp))) {
	        		R=mid;
	        		RS=tmp;
	        	} else {
	        		N=mid;
	        		NS=tmp;
	        	}
	        }
	        
	       
	    }

Compiler output:
Main.java:36: error: reached end of file while parsing
	    }
	     ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std; 

int main(void)
{	
  cin.tie(0);	
  ios::sync_with_stdio(false); 	
  
  int n; 	
  cin >> n; 	
  int lo = 0;	
  int hi = n - 1; 	
  
  while(lo<=hi)	
  {		
    int mid = (lo + hi)/2;		
    cout << mid << '\n' << fflush;
    string s;		
    cin >> s;		
    if(mid%2==0)		
    {			
      if(s=="Female")			
      {				
        hi = mid - 1;			
      }			
      else			
      {				
        lo = mid + 1;			
      }		
    }		
    else		
    {			
      if(s=="Male")			
      {				
        hi = mid - 1;		
      }			
      else			
      {				
        lo = mid + 1;			
      }		
    }	
  }	
  return 0;
}

Compiler output:
a.cc:2:21: error: extended character   is not valid in an identifier
    2 | using namespace std; 
      |                     ^
a.cc:7:31: error: extended character   is not valid in an identifier
    7 |   ios::sync_with_stdio(false); 
      |                               ^
a.cc:9:9: error: extended character   is not valid in an identifier
    9 |   int n; 
      |         ^
a.cc:10:12: error: extended character   is not valid in an identifier
   10 |   cin >> n; 
      |            ^
a.cc:12:18: error: extended character   is not valid in an identifier
   12 |   int hi = n - 1; 
      |                  ^
a.cc:2:21: error: '\U000000a0' does not name a type
    2 | using namespace std; 
      |                     ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	int n;

	cin >> n;

	int lo = 0;
	int hi = n - 1;

	for(int j=0;j<20;j++)
	{
		int mid = (lo + hi);
		cout << mid << '\n';
		string s;
		cin >> s;
		if(mid%2==0)
		{
			if(s=="Female")
			{
				hi = mid - 1;
			}
			else
			{
				lo = mid + 1;
			}
		}
		else
		{
			if(x=="Male")
			{
				hi = mid - 1;
			}
			else
			{
				lo = mid + 1;
			}
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:28: error: 'x' was not declared in this scope
   36 |                         if(x=="Male")
      |                            ^
Language: Java

	 class Main {
		 static int mod =  (int) (Math.pow(10,9)+7);
//		 static int mod =  (int) 998244353;
		 public static void main(String[] args) {
	    	
	        Scanner sc = new Scanner(System.in);

	        int N = sc.nextInt();
	        System.out.println(0);
	        String pre="-1";
        	String tmp = sc.next();
	        int Np=0;
	        for(int i=0;i<25;i++) {
	        	int mid = (N+Np)/2;
	        	System.out.println(mid);
	        	pre = tmp;
	        	tmp = sc.next();
	        	if(tmp.equals("Vacant"))return;
	        	if((tmp.equals(pre)&&N%2==Np%2) || (!tmp.equals(pre)&&N%2!=Np%2)) {
	        		Np=mid;
	        	} else {
	        		N=mid;
	        	}
	        }
	        
	       
	    }

Compiler output:
Main.java:27: error: reached end of file while parsing
	    }
	     ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int solve(int a,int b,int c,int aa,int bb,int cc){
  if((aa==cc&&a%2!=c%2)||(aa!=cc&&a%2==c%2)){
    int mid=(aa+cc)/2;
    cout << mid << endl;
    string s;
    cin >> s;
    if(s=="Vacant")return 0;
    if(s=="Male"){
      solve(a,c,mid,aa,cc,2);
    }
    else solve(a,c,mid,aa,cc,1);
  }
  else{
    int mid=(bb+cc)/2;
    cout << mid << endl;
    string s;
    cin >> s;
    if(s=="Vacant")return 0;
    if(s=="Male"){
      solve(c,b,mid,cc,bb,2);
    }
    else solve(c,b,mid,cc,bb,1);
  }
}
int main(){
  int n;
  cin >> n;
  cout << 0 << endl;
  string s;
  cin >> s;
  int aa=0;
  int bb=0;
  int cc=0;
  if(s=="Vacant")return 0;
  if(s=="Male"){
    aa=2;
  }
  else aa=1;
  cout << n-1 << endl;
  string t;
  cin >> t;
  if(t=="Vacant")return 0;
  if(t=="Male"){
    bb=2;
  }
  else bb=1;
  cout << (n-1)/2 << endl;
  string o;
  cin >> o;
  if(o=="Vacant")return 0;
  if(o=="Male"){
    cc=2;
  }
  else cc=1;
  solve(0,n-1,(n-1)/2,aa,bb,cc)
}


Compiler output:
a.cc: In function 'int main()':
a.cc:58:32: error: expected ';' before '}' token
   58 |   solve(0,n-1,(n-1)/2,aa,bb,cc)
      |                                ^
      |                                ;
   59 | }
      | ~                               
a.cc: In function 'int solve(int, int, int, int, int, int)':
a.cc:27:1: warning: control reaches end of non-void function [-Wreturn-type]
   27 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
void solve(int a,int b,int c,int aa,int bb,int cc){
  if((aa==cc&&a%2!=c%2)||(aa!=cc&&a%2==c%2)){
    int mid=(aa+cc)/2;
    cout << mid << endl;
    string s;
    cin >> s;
    if(s=="Vacant")return 0;
    if(s=="Male"){
      solve(a,c,mid,aa,cc,2);
    }
    else solve(a,c,mid,aa,cc,1);
  }
  else{
    int mid=(bb+cc)/2;
    cout << mid << endl;
    string s;
    cin >> s;
    if(s=="Vacant")return 0;
    if(s=="Male"){
      solve(c,b,mid,cc,bb,2);
    }
    else solve(c,b,mid,cc,bb,1);
  }
}
int main(){
  int n;
  cin >> n;
  cout << 0 << endl;
  string s;
  cin >> s;
  int aa=0;
  int bb=0;
  int cc=0;
  if(s=="Vacant")return 0;
  if(s=="Male"){
    aa=2;
  }
  else aa=1;
  cout << n-1 << endl;
  string t;
  cin >> t;
  if(t=="Vacant")return 0;
  if(t=="Male"){
    bb=2;
  }
  else bb=1;
  cout << (n-1)/2 << endl;
  string o;
  cin >> o;
  if(o=="Vacant")return 0;
  if(o=="Male"){
    cc=2;
  }
  else cc=1;
  solve(0,n-1,(n-1)/2,aa,bb,cc)
}


Compiler output:
a.cc: In function 'void solve(int, int, int, int, int, int)':
a.cc:10:27: error: return-statement with a value, in function returning 'void' [-fpermissive]
   10 |     if(s=="Vacant")return 0;
      |                           ^
a.cc:21:27: error: return-statement with a value, in function returning 'void' [-fpermissive]
   21 |     if(s=="Vacant")return 0;
      |                           ^
a.cc: In function 'int main()':
a.cc:58:32: error: expected ';' before '}' token
   58 |   solve(0,n-1,(n-1)/2,aa,bb,cc)
      |                                ^
      |                                ;
   59 | }
      | ~
Language: C++

#include <iostream>
#include <stdio.h>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <iomanip>
#include <queue>
#include <deque>
#include <map>
#include <unordered_map>
#define rep(i,n) for(int i=0;i<n;i++)
#define repn(i,n) for(int i=1;i<=n;i++)
#define repr(e,x) for(auto& e:x)
using namespace std;
typedef long long ll;

map<string,int> m;
int memo[99999];
int N;
string s;

int main(){
    m["Male"]=0;
    m["Female"]=1;
    m["Vacant"]=2;
    fill(memo,memo+N,-1);
    cin>>N;

    dfs(0,N-1);
}

void dfs(int start,int end){
    int v1,v2,vc;
    int c=(start+end)/2;

    if(memo[start]==-1){
        cout<<start<<endl;
        cin>>s;
        if(m[s]==2){
            cout<<start<<endl;
            return;
        }
        v1=memo[start]=m[s];
    }else{
        v1=memo[start];
    }
    
    if(memo[end]==-1){
        cout<<end<<endl;
        cin>>s;
        if(m[s]==2){
            cout<<end<<endl;
            return;
        }
        v2=memo[end]=m[s];
    }else{
        v2=memo[end];
    }

    if(memo[start]!=memo[end] && end-start<=2){
        cout<<start+1<<endl;
        return;
    }

    if(memo[c]==-1){
        cout<<c<<endl;
        cin>>s;
        if(m[s]==2){
            cout<<end<<endl;
            return;
        }
        vc=memo[c]=m[s];
    }else{
        vc=memo[c];
    }

    if(v1!=vc){
        dfs(start,c);
    }else if(v2!=vc){
        dfs(c,end);
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:5: error: 'dfs' was not declared in this scope
   30 |     dfs(0,N-1);
      |     ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define repp(i, a, b) for (int i = a; i <= (b); ++i)
#define repr(i, a, b) for (int i = a; i >= (b); --i)
#define bit(n) (1LL << (n))
#define len(x) ((ll)(x).size())
#define debug(var) cout << "[" << #var << "]\n" << var << endl
#define int long long
typedef long long ll;
const int INF = 1001001001001001001ll;
const ll LINF = 1001001001001001001ll;
const int MOD = 1000000007;
const double EPS = 1e-9;

template <typename T>
ostream& operator<<(ostream& s, const vector<T>& v) {
  int len = v.size();
  for (int i = 0; i < len; ++i) {
    s << v[i];
    if (i < len - 1)
      s << ' ';
  }
  return s;
}

template <typename T>
ostream& operator<<(ostream& s, const vector<vector<T>>& vv) {
  int len = vv.size();
  for (int i = 0; i < len; ++i) {
    s << vv[i];
    if (i != len - 1)
      s << '\n';
  }
  return s;
}

template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}

template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}

__attribute__((constructor)) void initial() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(15);
}

signed main() {
  int N;
  cin >> N;

  int l = 0, r = N;

  cout << 0 << endl;
  string s;
  cin >> s;
  if (s == "Vacant")
    return 0;


  string L = s, R = s;

  while (r - l > 1) {
    int m = (r + l) / 2;
    cout << m << endl;
    string s;
    cin >> s;
    if (s == "Vacant")
      return 0;

    int lm = (m - l - 1) % 2, mr = (r - m - 1) % 2;
    if (lm ^ (L == s))
      r = m;
    else
      l = m;
  }
  cout << l << endl;
  string s;
  cin >> s;
  if (s == "Vacant")
    return 0;

  cout << r << endl;
  string s;
  cin >> s;
  if (s == "Vacant")
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:97:10: error: redeclaration of 'std::string s'
   97 |   string s;
      |          ^
a.cc:74:10: note: 'std::string s' previously declared here
   74 |   string s;
      |          ^
a.cc:103:10: error: redeclaration of 'std::string s'
  103 |   string s;
      |          ^
a.cc:74:10: note: 'std::string s' previously declared here
   74 |   string s;
      |          ^
Language: C++

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<ll> vl;
typedef vector<vector<ll>> vvl;
typedef pair<ll, ll> P;
#define rep(i, n) for(ll i = 0; i < n; i++)
#define REP(i, a, b) for(ll i = a; i <= b; i++)
#define out(x) std::cout << x << '\n'
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define pb push_back
#define sz(x) ((int)(x).size())
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
ll lcm(ll a, ll b) { ll g = gcd(a, b); return a / g * b; }
const int dx[4] = { 1, 0, -1,  0 };
const int dy[4] = { 0, 1,  0, -1 };
const int INF = (int)1e9;
const ll  inf = (ll)1e18;
const int mod = 1000000007;
const int MAX_N = 100010;
const double PI = acos(-1);

int N;
string a0;

string ask(int i) {
    out(i);
    fflush(stdout);
    
    string res; 
    cin >> res;
    return res;
}

void f(int l, int r) {
    int md = (l + r) / 2;

    string res = ask(md);
    if (res == "Vacant") return;

    if ((md % 2 == 0 && a0 == res) 
        || (md % 2 == 1 && a0 != res)) {
        f(md + 1, r);
    }
    else {
        f(l, md);
    }
}

int main() {
    cin >> N;

    a0 = ask(0);
    if (a0 == "Vacant") return;

    f(1, N);

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:58:25: error: return-statement with no value, in function returning 'int' [-fpermissive]
   58 |     if (a0 == "Vacant") return;
      |                         ^~~~~~
Language: C++

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<ll> vl;
typedef vector<vector<ll>> vvl;
typedef pair<ll, ll> P;
#define rep(i, n) for(ll i = 0; i < n; i++)
#define REP(i, a, b) for(ll i = a; i <= b; i++)
#define out(x) std::cout << x << '\n'
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define pb push_back
#define sz(x) ((int)(x).size())
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
ll lcm(ll a, ll b) { ll g = gcd(a, b); return a / g * b; }
const int dx[4] = { 1, 0, -1,  0 };
const int dy[4] = { 0, 1,  0, -1 };
const int INF = (int)1e9;
const ll  inf = (ll)1e18;
const int mod = 1000000007;
const int MAX_N = 100010;
const double PI = acos(-1);

bool betemp(string sleft, string sright, int left, int right) {
	if (sleft == sright) return (right - left) % 2 == 1;
	else return (right - left) % 2 == 0;
}

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	cout << fixed << setprecision(10);
	/*------------------------------*/

	int n;
	
	while (cin >> n) {
		string vac = "Vacant";
		string sleft, sright, str;
		
		int left = 0, right = n / 2;
		
		out(left);
		cin >> sleft;
		if (sleft == vac) return;
		cin >> sright;
		if (sright == vac) return;

		if (!betemp(sleft, sright, left, right)) {
			swap(sleft, sright);
			left = right;
			right = n;
		}

		while (right - left > 1) {
			int mid = (left + right) / 2;
			
			out(mid);
			cin >> str;
			if (str == vac) return;

			if (betemp(sleft, str, left, mid)) {
				sright = str;
				right = mid;
			}
			else {
				sleft = str;
				left = mid;
			}
		}
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:48:35: error: return-statement with no value, in function returning 'int' [-fpermissive]
   48 |                 if (sleft == vac) return;
      |                                   ^~~~~~
a.cc:50:36: error: return-statement with no value, in function returning 'int' [-fpermissive]
   50 |                 if (sright == vac) return;
      |                                    ^~~~~~
a.cc:63:41: error: return-statement with no value, in function returning 'int' [-fpermissive]
   63 |                         if (str == vac) return;
      |                                         ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int N;
  cin>>N;
  int maxp,minp,mid;
  minp=0;
  maxp=N-1;
  mid=(minp+maxp)/2;
  string temp1,temp2,temp3;
  cout<<minp<<endl;
  cin>>temp1;
  if(temp1=="Vacant"){
  return 0;
  }
  cout<<maxp<<endl;
  cin>>temp2;
  if(temp2=="Vacant"){
  return 0;
  }
  while(1){
    cout<<mid<<endl;
    cin>>temp3;
    if(temp3=="Vacant"){
    return 0;
    }    

    if(temp1==temp3)){
      minp=mid;
      mid=(mid+maxp)/2;
    }
    if(temp2==temp3){
      maxp=mid;
      mid=(mid+minp)/2;
    }
  }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:21: error: expected primary-expression before ')' token
   29 |     if(temp1==temp3)){
      |                     ^
Language: C++

#include <bits/stdc++.h>
#define exrep(i, a, b) for(long long i = a; i <= b; i++)
#define rep(i,n)for(long long i=0;i<(long long)(n);i++)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> P;
typedef vector<ll> vl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vector<ll> > vvl;
typedef vector<vector<P> > vvp;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int n;
  cin >> n;
  vector<int>vec(n);
  while(true){
    int l=0,r=n;
    cout << 0 << endl;
    string s;
    cin >> s;
    if(s[0]=='V')return 0;
    else if(s[0]=='M')vec[0]=1;
    else vec[0]=0;
    
    while(true){
      int m=(r+l)/2;
      cout << m << endl;
      string t;
      cin >> t;
      if(t[0]=='V')return 0;
      else if(t[0]=='M')vec[m]=1;
      else vec[m]=0;
      
      if((c-l)%2^vec[m]==vec[l])l=m;
      else r=m;
    }
    
  }
  return 0;     
}


Compiler output:
a.cc: In function 'int main()':
a.cc:51:11: error: 'c' was not declared in this scope
   51 |       if((c-l)%2^vec[m]==vec[l])l=m;
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int N;
  int maxp,minp;
  minp=0;
  maxp=N/2;
  string temp1,temp2;
  while(1){
    cout<<minp<<endl;
    cin>>temp1;
    if(temp=="Vacant"){
      return 0;
    }
    cout<<maxp<<endl;
    cin>>temp2;
    if(temp=="Vacant"){
      return 0;
    }
    if(temp1==temp2){
      minp=maxp;
      maxp=N-1;
    }
    if(temp1!=temp2){
      maxp=maxp/2;
    }
  }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: 'temp' was not declared in this scope; did you mean 'temp2'?
   13 |     if(temp=="Vacant"){
      |        ^~~~
      |        temp2
a.cc:18:8: error: 'temp' was not declared in this scope; did you mean 'temp2'?
   18 |     if(temp=="Vacant"){
      |        ^~~~
      |        temp2
Language: C++

#include <bits/stdc++.h>
#define exrep(i, a, b) for(long long i = a; i <= b; i++)
#define rep(i,n)for(long long i=0;i<(long long)(n);i++)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> P;
typedef vector<ll> vl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vector<ll> > vvl;
typedef vector<vector<P> > vvp;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int n;
  cin >> n;
  cout << 0 << endl;
  string s;
  cin >> s;
  int left=0,right=n;
  if(s=="Vacant")return 0;
  else{
    while(true){
      int mid=(left+right)2;
      cout << mid << endl;
      string t;
      cin >> t;
      if(t=="Vacant")return 0;
      else if((s==t && (right-mid)%2==0) || (s!=t && (right-mid)%2!=0)) right=mid;
      else left=mid;
      s=t;
    }
      
  }
  return 0;     
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:27: error: expected ',' or ';' before numeric constant
   39 |       int mid=(left+right)2;
      |                           ^
Language: C++

#include <bits/stdc++.h>
#define exrep(i, a, b) for(long long i = a; i <= b; i++)
#define rep(i,n)for(long long i=0;i<(long long)(n);i++)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> P;
typedef vector<ll> vl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vector<ll> > vvl;
typedef vector<vector<P> > vvp;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int n;
  cin >> n;
  string s;
  int left=n-1;
  int right=0;
  cout << n-1 << endl;
  cin >> s;
  if(s=="Vacant")cout << n-1 << endl;
  else{
    while(abs(right-left)>1){
      string t;
      int mid=(right+left)/2;
      cout << mid << endl;
      cin >> t;
      if(t=="Vacant"){
        cout << mid << endl;
        return 0;
      }
      if((s==t && (left-mid)%2==0)||(s!=t && (left-mid)%2!=0)){
        left=mid;
        s=t;
      }
      else{
        right=mid;
        s=t;
      }    
    }
    
  return 0;     
}


Compiler output:
a.cc: In function 'int main()':
a.cc:59:2: error: expected '}' at end of input
   59 | }
      |  ^
a.cc:26:11: note: to match this '{'
   26 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
#define exrep(i, a, b) for(long long i = a; i <= b; i++)
#define rep(i,n)for(long long i=0;i<(long long)(n);i++)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> P;
typedef vector<ll> vl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vector<ll> > vvl;
typedef vector<vector<P> > vvp;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int n;
  cin >> n;
  string s;
  int left=n-1;
  int right=0;
  cout << n-1 << endl;
  cin >> s;
  if(s=="Vacant")cout << n-1 << endl;
  else{
    while(abs(right-left)>1){
      string t;
      int mid=(right+left)/2;
      cout << mid << endl;
      cin >> t;
      if(t=="Vacant"){
        cout << mid << endl;
        return 0;
      }
      if((s==t && left%2==mid%2)||(s!=t && left%2!=mid%2)){
        left=mid;
        s=t;
      }
      else{
        right=mid;
        s=t;
      }    
    }
    
  return 0;     
}


Compiler output:
a.cc: In function 'int main()':
a.cc:59:2: error: expected '}' at end of input
   59 | }
      |  ^
a.cc:26:11: note: to match this '{'
   26 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < n; i++)
#define all(x)(x).begin(), (x).end() // 昇順ソート
#define rall(v)(v).rbegin(), (v).rend() // 降順ソート
#define INF 1LL << 60
typedef long long int LL;
typedef long long int ll;
#define pll pair < ll, ll >
#define F first
#define S second
const int MOD = 1000000007;
template < class T > bool chmax(T & a,const T & b) { if (a < b) { a = b; return true; } return false; }
template < class T > bool chmin(T & a,const T & b) { if (a > b) { a = b; return true; } return false; }
// 任意のlogは　対数の底の変換を使う    log(N) / log(任意の底)

bool ch(int lb,int mid,string l,string m){
    int ld = mid - lb;
    if(ld % 2 == 1 && l == m)return false;
    else if(ld % 2 == 0 && l != m)return false;
    else return true;
}

int main() {
    int N;cin >> N;

    int lb = 0; int ub = N-1;
    cout << lb << endl;
    string l;cin >> l;
    cout << ub << endl;
    string r;cin >> r;
    if(l == "Vacant" || r == "Vacant")break;

    while(ub - lb > 1){

        int mid = (ub+lb)/2;
        cout << mid << endl;
        string m;cin >> m;
        if(m == "Vacant")break;


        if(ch(lb,mid,l,m))lb = mid;    // lb,ubは適宜変更
        else ub = mid;
    }
       
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:39: error: break statement not within loop or switch
   32 |     if(l == "Vacant" || r == "Vacant")break;
      |                                       ^~~~~
Language: C++

#include "bits/stdc++.h"

#define REP(i,num) for(ll i=0;i<(num);++i)
#define LOOP(i) while(i--)
#define ALL(c) c.begin(),c.end()
#define PRINTALL(c) for(auto pitr=c.begin();pitr!=c.end();++pitr){cout<<*pitr;if(next(pitr,1)!=c.end())cout<<' ';}cout<<endl;
#define PAIRCOMP(c,comp) [](const pair<ll,ll>& lhs,const pair<ll,ll>& rhs){return lhs.c comp rhs.c;}

using namespace std;
using ll = long long;

constexpr ll atcoder_mod = 1e9+7;

template<typename T=ll>
T in(){T x; cin >> x; return (x);}
template<typename T=ll,typename C=vector<T>>
C vecin(int N){C x(N);REP(i,N){x[i]=in<T>();}return move(x);}

void vout(){cout << endl;}
template<typename Head,typename... Tail>
void vout(Head&& h,Tail&&... t){cout << ' ' << h;vout(forward<Tail>(t)...);}
void out(){cout << endl;}
template<typename Head,typename... Tail>
void out(Head&& h,Tail&&... t){cout << h;vout(forward<Tail>(t)...);}

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	cout<<fixed<<setprecision(10);

	ll N=in();
	ll start=0,end=N;
	ll H = (start+end)/2;

	auto func = [](ll P,string& S){
		cout.flush;
		out(P);
		S=in<string>();
		if(S=="Vacant"){
			out(P);
			exit(0);
		}
	};

	string SS,SE,SH;
	func(start,SS);
	SE=SS;
	func(H,SH);

	REP(i,17){
		if((H-start)%2){
			if(SS!=SH){
				start = H;
				SS = SH;
				H = (start+end)/2;
			}
			else{
				end = H;
				SE = SH;
				H = (start+end)/2;
			}
		}
		else{
			if(SS==SH){
				start = H;
				SS = SH;
				H = (start+end)/2;
			}
			else{
				end = H;
				SE = SH;
				H = (start+end)/2;
			}
		}

		func(H,SH);
	}
	return 0;
}


Compiler output:
a.cc: In lambda function:
a.cc:36:22: error: invalid use of non-static member function 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::flush() [with _CharT = char; _Traits = std::char_traits<char>]'
   36 |                 cout.flush;
      |                 ~~~~~^~~~~
In file included from /usr/include/c++/14/ostream:1022,
                 from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/bits/ostream.tcc:221:5: note: declared here
  221 |     basic_ostream<_CharT, _Traits>::
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair< int, int >;

bool betemp(string sleft, string sright, int left, int right) {
    if (sleft == sright)
        return (right - left) % 2 == 1;
    else
        return (right - left) % 2 == 0;
}

int main() {
    int N;
    cin >> N;

    string vac = "Vacant";
    string sleft, sright, str;
    int left = 0, right = N / 2;

    cout << left << endl;
    cin >> sleft;
    if (sleft == vac) return;
    cout << right << endl;
    cin >> sright;
    if (sright == vac) return;

    if (!betemp(sleft, sright, left, right)) {
        swap(sleft, sright), left = right, right = N;
    }

    while (right - left > 1) {
        int mid = (left + right) / 2;
        cout << mid << endl;
        cin >> str;
        if (str == vac) return;
        if (betemp(sleft, str, left, mid)) {
            sright = str, right = mid;
        } else {
            sleft = str, left = mid;
        }
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:23: error: return-statement with no value, in function returning 'int' [-fpermissive]
   24 |     if (sleft == vac) return;
      |                       ^~~~~~
a.cc:27:24: error: return-statement with no value, in function returning 'int' [-fpermissive]
   27 |     if (sright == vac) return;
      |                        ^~~~~~
a.cc:37:25: error: return-statement with no value, in function returning 'int' [-fpermissive]
   37 |         if (str == vac) return;
      |                         ^~~~~~