Submission #1216412

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216412		moondarkside	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

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

int press(string p){
    cout<<"\n"<<p<<"\n";
    int score;
    cin>>score;
    return score;
}


char text[]={'A','B','X','Y'};

string guess_sequence(int N){
    string ForNow;
    
    if(press("AB")!=0){
        if(press("A")!=0){
            ForNow="A";
        }
        else{
            ForNow="B";
        }
    }
    else{
        if(press("X")!=0){
            ForNow="X";
        }
        else{
            ForNow="Y";
        }
    }
    
    char Banned=ForNow[0];
    
    std::vector<char> NewText;
    for(int i=0;i<4;i++){
        if(text[i]!=Banned){
            NewText.push_back(text[i]);
        }
    }
    
    if(N==1){
        return ForNow;
    }
    
    while(ForNow.size()<N-1){
        string Send;
        Send+=ForNow+NewText[0]+ForNow+NewText[1]+NewText[0]+ForNow+NewText[1]+NewText[1]+ForNow+NewText[1]+NewText[2];
        int score=press(Send);
        if(score==ForNow.size()){
            ForNow.push_back(NewText[2]);
        }
        else if(score==ForNow.size()+1){
            ForNow.push_back(NewText[0]);
        }
        else{
            ForNow.push_back(NewText[1]);
        }
        
    }
    
    if(press(ForNow+NewText[0]+ForNow+NewText[1])!=N){
        ForNow+=NewText[2];
        return ForNow;
    }
    
    if(press(ForNow+NewText[1])!=N){
        ForNow+=NewText[0];
        return ForNow;
    }
    ForNow+=NewText[1];
    return ForNow;
    
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc8K1Hy4.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccgihenV.o:combo.cpp:(.text+0xd0): first defined here
collect2: error: ld returned 1 exit status