Submission #988704

#	Time	Username	Problem	Language	Result	Execution time	Memory
988704		Mighilon	Combo (IOI18_combo)	C++17	0 / 100	1 ms	596 KiB

combo

#include <combo.h>
#include <bits/stdc++.h>
using namespace std;
 
#define trav(a, x) for(auto &a: x)
#define sz(x) (int)x.size()
 
string guess_sequence(int n){
    string a="ABXY", b="AB", d, s;
    if(!press("AB"))
        d="XY";
    char fc = b[0];
    if(!press(b.substr(0, 1)))
        fc=b[1];
    trav(c, a)
        if(c!=fc)
            d+=c;
    s+=fc;
    if(n<=1) return s;
    while(sz(s)<n-1)
        s+=d[press(s+d[1]+s+d[2]+d[0]+s+d[2]+d[1]+s+d[2]+d[2])-sz(s)];
    if(press(s+d[0]+s+d[1])>sz(s)){
        if(press(s+d[0])>sz(s))
            return s+d[0];
        return s+d[1];
    }
    return s+d[2];
}

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