Submission #548304

#	Time	Username	Problem	Language	Result	Execution time	Memory
548304		Killer2501	Combo (IOI18_combo)	C++14	0 / 100	1 ms	208 KiB

combo

#define fi first
#define se second
#define pb push_back
#include "combo.h"
using namespace std;
using ll = long long;
using ld = long double;

const int N = 3e5 +2;
const int base = 31;
const int mod = 1e9 +7;
int a[4], k;
string guess_sequence(int n)
{
    string res;
    for(int i = 0; i < 4; i ++)a[i] = 1;
    for(int i = 1; i <= n; i ++)
    {
        string s;
        if(a[0])
        {
            k = press(res+"A");
            if(k == i)
            {
                res += "A";
                if(i == 1)a[0] = 0;
                continue;
            }

        }
        if(a[1])
        {
            k = press(res+"B");
            if(k == i)
            {
                res += "B";
                if(i == 1)a[1] = 0;
                continue;
            }

        }
        if(a[2])
        {
            k = press(res+"X");
            if(k == i)
            res += "Y";
            if(i == 1)a[3] = 0;
        }
    }
    return res;
}

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