Submission #1029304

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029304		Osplei	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
 
using namespace std;
 
typedef pair<int,int> ii;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ii> vii; 
typedef vector<vii> wgraf;
typedef pair<int,ii> edge;
typedef vector <ll> vl;
typedef pair <ll, ll> LL;
typedef vector <LL> vll;
 
#define UNVISITED 0
#define VISITED 1
#define pb push_back
#define F first
#define S second

string guess_sequence(int N){
  ll k = 0, aux;
  string ans = "", act;

  aux = press("XA");

  if (aux != 0) {
    aux = press("X");
    if (aux != 0) ans += 'X';
    else ans += 'A';
  } else {
    aux = press("B");
    if (aux != 0) ans += 'B';
    else ans += 'Y';
  }

  k = 1;

  for (ll i = 0; i < N - 1; i++) {
    act = ans;
    if (ans[0] == 'X') {

      act += 'A';
      act += 'A';
      act += ans;
      act += 'A';
      act += 'B';
      act += ans;
      act += 'A';
      act += 'Y';

      act += ans;
      act += 'B';
      aux = press(act);

      if (aux == k + 2) ans += 'A';
      else if (aux == k + 1) ans += 'B';
      else ans += 'Y';

    } else if (ans[0] == 'A') {

      act += 'X';
      act += 'X';
      act += ans;
      act += 'X';
      act += 'B';
      act += ans;
      act += 'X';
      act += 'Y';

      act += ans;
      act += 'B';
      aux = press(act);

      if (aux == k + 2) ans += 'X';
      else if (aux == k + 1) ans += 'B';
      else ans += 'Y';

    } else if (ans[0] == 'B') {

      act += 'A';
      act += 'A';
      act += ans;
      act += 'A';
      act += 'X';
      act += ans;
      act += 'A';
      act += 'Y';

      act += ans;
      act += 'X';
      aux = press(act);

      if (aux == k + 2) ans += 'A';
      else if (aux == k + 1) ans += 'X';
      else ans += 'Y';

    } else {

      act += 'A';
      act += 'A';
      act += ans;
      act += 'A';
      act += 'B';
      act += ans;
      act += 'A';
      act += 'X';

      act += ans;
      act += 'B';
      aux = press(act);

      if (aux == k + 2) ans += 'A';
      else if (aux == k + 1) ans += 'B';
      else ans += 'X';

    }

    k++;
  }

  if (ans[0] == 'X'){
    act = ans;
    act += 'A';
    act += ans;
    act += 'B';
    aux = press(act);
    
    if (aux >= N) {
      act = ans;
      act += 'A';

      aux = press(act);

      if (aux == N) {
        ans += 'A';
        return ans;
      } else {
        ans += 'B';
        return ans;
      }
    } else {
      ans += 'Y';
      return ans;
    }
  } else if (ans[0] == 'A'){
    act = ans;
    act += 'X';
    act += ans;
    act += 'B';
    aux = press(act);
    
    if (aux >= N) {
      act = ans;
      act += 'X';

      aux = press(act);

      if (aux == N) {
        ans += 'X';
        return ans;
      } else {
        ans += 'B';
        return ans;
      }
    } else {
      ans += 'Y';
      return ans;
    }
  } else if (ans[0] == 'B'){
    act = ans;
    act += 'A';
    act += ans;
    act += 'X';
    aux = press(act);
    
    if (aux >= N) {
      act = ans;
      act += 'A';

      aux = press(act);

      if (aux == N) {
        ans += 'A';
        return ans;
      } else {
        ans += 'X';
        return ans;
      }
    } else {
      ans += 'Y';
      return ans;
    }
  } else {
    act = ans;
    act += 'A';
    act += ans;
    act += 'B';
    aux = press(act);
    
    if (aux >= N) {
      act = ans;
      act += 'A';

      aux = press(act);

      if (aux == N) {
        ans += 'A';
        return ans;
      } else {
        ans += 'B';
        return ans;
      }
    } else {
      ans += 'X';
      return ans;
    }
  }

}

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int t = 1;
  //cin >> t;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:26:9: error: 'press' was not declared in this scope
   26 |   aux = press("XA");
      |         ^~~~~
combo.cpp: In function 'int main()':
combo.cpp:226:7: warning: unused variable 't' [-Wunused-variable]
  226 |   int t = 1;
      |       ^