Submission #864032

#	Time	Username	Problem	Language	Result	Execution time	Memory
864032		dpsaveslives	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

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

int press(string p){
    cout << p << "\n";
    int ok; cin >> ok;
    return ok;
}
string guess_sequence(int N){
    vector<int> mp = {'A','B','X','Y'};
    string s = ""; int p;
    int r = press("AB");
    if(r == 0){
        r = press("X");
        if(r == 0){
            s += "Y";
            p = 3;
        }
        else{
            s += "X";
            p = 2;
        }
    }
    else if(r == 1){
        r = press("A");
        if(r == 0){
            s += "B";
            p = 1;
        }
        else{
            s += "A";
            p = 0;
        }
    }
    else{
        p = 0;
        s += "A";
    }
    for(int i = 1;i<N;++i){
        string cur = "";
        for(int j = 0;j<4;++j){
            if(j != p){
                cur += s; cur += mp[(p+1)%4];
                cur += mp[j];
            }
        }
        cur += s; cur += mp[(p+2)%4];
        int r = press(cur);
        if(r == i){
            s += mp[(p+3)%4];
        }
        else if(r == i+1){
            s += mp[(p+2)%4];
        }
        else{
            s += mp[(p+1)%4];
        }
        cout << s << "\n";
    }
    return s;
}
int main()
{
    string s = guess_sequence(5); //ABXYY
    cout << s << "\n";
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccrb4Ki6.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/cc5mkUR6.o:combo.cpp:(.text+0x0): first defined here
/usr/bin/ld: /tmp/ccrb4Ki6.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc5mkUR6.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status