Submission #850038

#	Time	Username	Problem	Language	Result	Execution time	Memory
850038		Andrijanikolic73	Combo (IOI18_combo)	C++17	30 / 100	29 ms	1712 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
//#include "combo.h"
int pitao;
/*
int press(string P){
    cout<<"? "<<P;
    cout<<endl;
    int x;
    cin>>x;
    return x;
}*/
std::string guess_sequence(int N) {
    /*
    if(N==3){
        string pref="";
        char P[4]={'A','B','X','Y'};
        for(int i=0;i<N;i++){
            for(int j=0;j<4;j++){
                if(press(pref+P[j])==i+1){
                    pref+=P[j];
                    break;
                }
            }
        }
        return pref;
    }*/
    string pref="";
    char P[4]={'A','B','X','Y'};
    for(int i=0;i<3;i++){
        if(press(pref+P[i])){
            pref+=P[i];
            pitao++;
            break;
        }
    }
    if(!pref.size())pref+=P[3];
    int visited[4];
    for(int i=0;i<4;i++)visited[i]=0;
    for(int i=0;i<4;i++){
        if(P[i]==pref[0])visited[i]=1;
    }
    for(int i=1;i<N;i++){
        vector<char>probaj;
        for(int j=0;j<4;j++)if(!visited[j])probaj.push_back(P[j]);
        string guess=pref;
        guess+=probaj[0];
        guess+=pref;
        guess+=probaj[1];
        pitao++;
        if(press(guess)==i+1){
            // il prvi il drugi
            if(press(pref+probaj[0])==i+1)pref+=probaj[0];
            else pref+=probaj[1];
            pitao++;
        }
        else {
            // treci
            pref+=probaj[2];
        }
    }
    return pref;
}/*
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin>>n;
    cout<<guess_sequence(n);
}*/

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