Submission #552306

#	Time	Username	Problem	Language	Result	Execution time	Memory
552306		pckien	Combo (IOI18_combo)	C++17	10 / 100	75 ms	448 KiB

combo

#include <bits/stdc++.h>

#define vi vector<int>
#define ii pair<int, int>
#define vii vector<ii>
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define sz(a) (int)a.size()

#define sci(a) scanf("%d", &a)
#define scii(a, b) scanf("%d %d", &a, &b)
#define pri(a) printf("%d ", a)
#define pril(a) printf("%d\n", a)

#define fto(i, a, b) for(int i = a; i <= b; ++i)
#define fdto(i, a, b) for(int i = a; i >= b; --i)

#define oo 1000000007
#define maxN 10005

using namespace std;

int press(string p);

string guess_sequence(int N) {

    string s;
    char mov[5];

    mov[1] = 'X';
    mov[2] = 'Y';
    mov[3] = 'A';
    mov[4] = 'B';

    int cnt = 0;
    fto (i, 1, N) {
        fto (j, 1, 4) {
            s += mov[j];
            int t = press(s);
            fflush(stdout);
            if (t > cnt) {
                cnt = t;
                break;
            }
            s.pop_back();
        }
    }
    return s;
}

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