Submission #148191

#	Time	Username	Problem	Language	Result	Execution time	Memory
148191		FEDIKUS	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>

using namespace std;
void uradi(string &upit,string s,char prvo){
    char niz[4];
    niz[0]='A';niz[1]='B';niz[2]='X';niz[3]='Y';
    bool bio=false;
    for(int i=0;i<4;i++){
        if(niz[i]==prvo) continue;
        if(bio){
            for(int j=0;j<4;j++){
                if(niz[j]!=prvo){
                    upit+=s;
                    upit+=niz[i];
                    upit+=niz[j];
                }
            }
        }else{
            bio=true;
            upit+=s;
            upit+=niz[i];
        }
    }
}
string guess_sequence(int n){
    string s="";
    char prvo;
    if(press("AB")>0){
        if(press("A")>0){
            s+='A';
            prvo='A';
        }else{
            s+='B';
            prvo='B';
        }
    }else{
        if(press("X")>0){
            s+='X';
            prvo='X';
        }else{
            s+='Y';
            prvo='Y';
        }
    }
    for(int i=1;i<=n-2;i++){
        string upit="";
        uradi(upit,s,prvo);
    }
    if(press(s+"A"+s+"B")>s.size()){
        if(press(s+"A")>s.size()){
            s+='A';
            prvo='A';
        }else{
            s+='B';
            prvo='B';
        }
    }else{
        if(press(s+"X")>s.size()){
            s+='X';
            prvo='X';
        }else{
            s+='Y';
            prvo='Y';
        }
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:28:8: error: 'press' was not declared in this scope
   28 |     if(press("AB")>0){
      |        ^~~~~
combo.cpp:49:8: error: 'press' was not declared in this scope
   49 |     if(press(s+"A"+s+"B")>s.size()){
      |        ^~~~~