Submission #1323458

#	Time	Username	Problem	Language	Result	Execution time	Memory
1323458		_aira	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

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

#define endl '\n' 
#define pb push_back
#define ff first 
#define ss second
#define all(a) a.begin(),a.end()
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define fios(); ios_base::sync_with_stdio(0);cin.tie(0);
#define file(); freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);

int press(string p);

string guess_sequence(int N){
    string ans="",s="";

    if(press("AB")!=0) {
        if(press("A")==1){
            ans="A";
            s="BXY";
        }else{
            ans="B";
            s="AXY";
        }
    } else if(press("X")==1) {
        ans="X"; 
        s="ABY";
    } else {
        ans="Y"; 
        s="ABX";
    }
    if(N==1) return ans;
    for(int i=2;i<=N;i++){
        if(i==N){
            if(press(ans+s[0])==N){
                ans+=s[0]; 
            } 
            else{
                ans+=s[1];
            }
            continue;
        }
        int k=press(ans+s[0]+ans+s[1]+s[0]+ans+s[1]+s[1]+ans+s[1]+s[2]);
        if(k==ans.size()+1){
            ans+=s[0];
        }
        else if(k==ans.size()+2){
            ans+=s[1];
        }
        else ans+=s[2];
    }
    return ans;
}

//
int call=0;
int press(string p){
    cout<<p<<endl;
    cout.flush();
    int k;
    cin>>k;
    call++;
    return k;
}

void solve(){
    string str; cin>>str;
    cout<<guess_sequence(str.size())<<endl;
    cout.flush();
    cout<<call<<endl;
    cout.flush();
    return;
}

int32_t main(){
    fios();
    solve();
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccI98tCJ.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/ccyOZfcK.o:combo.cpp:(.text+0x160): first defined here
/usr/bin/ld: /tmp/ccI98tCJ.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccyOZfcK.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status