Submission #951111

#	Time	Username	Problem	Language	Result	Execution time	Memory
951111		star	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

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

string guess_sequence( int n) {
   string p = "" , ans = "" ;
   char a, b, c, d;
   if (press( " AB " ) > 0 ) {
    c = 'X' , d = 'Y' ;
    press( "A" )? (a = 'A'  , b = 'B' ) : (a = 'B' , b = 'A' );
  } else {
    c = 'A' , d = 'B' ;
    press( "X" )? (a = 'X' , b = 'Y' ) : (a = 'Y' , b = 'X' );
  }
  ans = a;
   if (n == 1 ) return ans;
   for ( int i = 1 ; i < n - 1 ; ++ i) {
    p = ans + b + b + ans + b + c + ans + b + d + ans + c;
     int bk = press(p);
     if (bk == i + 0 ) ans += d;
     if (bk = = i + 1 ) ans += c;
     if (bk == i + 2 ) ans += b;
  }
  if (press(ans + b) == n) ans += b;
   else  if (press(ans + c) == n) ans += c;
   else ans += d;
   return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:8: error: 'press' was not declared in this scope
    7 |    if (press( " AB " ) > 0 ) {
      |        ^~~~~
combo.cpp:18:15: error: 'press' was not declared in this scope
   18 |      int bk = press(p);
      |               ^~~~~
combo.cpp:20:15: error: expected primary-expression before '=' token
   20 |      if (bk = = i + 1 ) ans += c;
      |               ^
combo.cpp:23:7: error: 'press' was not declared in this scope
   23 |   if (press(ans + b) == n) ans += b;
      |       ^~~~~