제출 #1236588

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1236588		em4ma2	Combo (IOI18_combo)	C++20	100 / 100	7 ms	484 KiB

combo

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

#define pb push_back
#define ll long long

const int off=1<<19;
const int inf=1e9+4;
const int mxsz=2e5+4;

string guess_sequence(int n) {
    string p = "XY";
    int x;
    //cout<<p<<endl;
    x=press(p);
    if (x>0){
        p="X";
        x=press(p);
        if (x==0){
            p="Y";
        }
    }else{
        p="A";
        x=press(p);
        //cout<<x<<endl;
        if (x==0){
            p="B";
        }
    }
    if (n==1)return p;
    string chs="ABXY";
    for (int i=0;i<4;i++){
        if (chs[i]==p[0])chs[i]='#';
    }
    string k;
    for (auto x:chs){
        if (x!='#')k.pb(x);
    }
    //cout<<p<<endl;
    //cout<<k<<endl;
    int cnt=1;
    int tmp=n-2;
    int j=0;
    while (tmp--){
        string s=p+k[j]
                +p+k[j+1]+k[j]
                +p+k[j+1]+k[j+1]
                +p+k[j+1]+k[j+2];
        //cout<<"DSfj";
        x=press(s);
        //cout<<"DSfj";
        if (x==p.size()+0){
            p+=k[j+2];
        }else if (x==p.size()+1){
            p+=k[j];
        }else{
            p+=k[j+1];
        }
        cnt++;
    }
    string s=p+k[j]
            +p+k[j+1];
    x=press(s);
    if (x==p.size()+1){
        s=p+k[j];
        x=press(s);
        if (x==cnt){
            s=p+k[j+1];
        }
    }else{
        s=p+k[j+2];
    }
    return s;
}

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