Submission #1104020

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104020		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 = "";
    s = "ABX";
    if(press("ABX")==0){
        s = "Y";
        a[1] = 'A';
        a[2] = 'B';
        a[3] = 'X';
    }
    else if(press("ABY") == 0){
        s = "X";
        a[1] = 'A';
        a[2] = 'B';
        a[3] = 'Y';
    }
    else if(press("AXY") == 0){
        s = "B";
        a[1] = 'A';
        a[2] = 'Y';
        a[3] = 'X';
    }
    else{
        s = "A";
        a[1] = 'Y';
        a[2] = 'B';
        a[3] = 'X';
    }
    for(int i = 2;i <= n;i++){
        string d = s;
        d += a[1];
        d += a[2];
        int z = press(d);
        z -= int(s.size());
        d = s;
        d += a[1];
        d += a[1];
        int  x= press(d);
        x -= int(s.size());
        if(z == 0){
            s += a[3];
            continue;
        }
        else if(z == 1 && x == 0){
            s += a[2];
        }
        else{
            s += a[1];
        }
    }
    return s;
}

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