Submission #239218

#	Time	Username	Problem	Language	Result	Execution time	Memory
239218		Dremix10	Combo (IOI18_combo)	C++17	30 / 100	64 ms	592 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define F first
#define S second
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define maxp 22
#define EPS (ld)(1e-18)
#define mod (int)(1e9+7)


/// x = press(string s) for query

string guess_sequence(int N) {
    int i;
    string s="";

    char moves[4]={'A','B','X','Y'};

    for(i=0;i<N;i++){
        string p=s+moves[0];
        p+=s+moves[1];
        int x=press(p);

        if(x==i){
            p=s+moves[2];
            x=press(p);
            if(x==i)
                s+=moves[3];
            else
                s+=moves[2];
        }
        else{
            p=s+moves[0];
            x=press(p);
            if(x==i)
                s+=moves[1];
            else
                s+=moves[0];
        }

    }
    return s;
}

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95