Submission #224568

#	Time	Username	Problem	Language	Result	Execution time	Memory
224568		AASG	Combo (IOI18_combo)	C++17	100 / 100	40 ms	712 KiB

combo

#include "combo.h"

std::string guess_sequence(int N) {
  std::string p = "";
  std::string L = "ABXY";
  std::string S;
  if(press("AB")>0){
    if(press("A")>0){
        S="A";
        L="BXY";
    }else{
    S="B";
    L="AXY";
    }
  }else{
   if(press("X")>0){
        S="X";
        L="ABY";
    }else{
    S="Y";
    L="ABX";
    }
  }
  int coins=1, x=0, c=0;
  for(int i=1;i<N-1;i++){
    x=press(S+L[0]+L[0]+S+L[0]+L[1]+S+L[0]+L[2]+S+L[1]);
    if(x-coins==2) S=S+L[0];
    else if(x-coins==1) S=S+L[1];
    else if(x-coins==0) S=S+L[2];
    coins++;
  }
  if(coins<N){
  if(press(S+"A"+S+"B")>coins){
    if(press(S+"A")>coins){
        S=S+"A";
    }else{
    S=S+"B";
    }
  }else{
   if(press(S+"X")>coins){
        S=S+"X";
    }else{
    S=S+"Y";
    }
  }
}
  return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:24:21: warning: unused variable 'c' [-Wunused-variable]
   24 |   int coins=1, x=0, c=0;
      |                     ^

• Subtask 1: 5 / 5
• Subtask 2: 95 / 95