Submission #1104004

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104004		asdfghjk	Combo (IOI18_combo)	C++17	0 / 100	1 ms	336 KiB

combo

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(x) x.begin(), x.end()
#define F first
#define ld long double
#define S second
using namespace std;
const ll N = 5e3 + 5;
const ll NN = 4e5 + 5;
const ll INF = 1e18;
const ll inf = 1e9;
const ll MOD = 1e9 + 7;
char a[10];
int was[10];
int press(std::string p);
string guess_sequence(int n){
    a[1] = 'A';
    a[2] = 'B';
    a[3] = 'X';
    a[4] = 'Y';
    string s = "";
    for(int i = 1;i <= 4;i++){
        string d = "";
        d += a[i];
        int res = press(d);
        if(res == 1){
            s = d;
            for(int j = i;j <= 3;j++){
                a[j] = a[j + 1];
            }
            break;
        }
    }
    for(int i = 2;i <= n;i++){
        if(int(s.size()) > i)continue;
        string d = s;
        d += a[1];
        d += a[2];
        int res = press(d);
        int sz=  int(s.size());
        if(res == sz){
            s += a[3];
        }
        else if(res == sz + 1){
            d = s;
            d += a[1];
            res = press(d);
            if(res == sz + 1){
                s = d;
            }
            else{
                s += a[2];
            }
        }
        else{
            s = d;
        }
    }
    return s;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95