Submission #1081847

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081847		KasymK	Combo (IOI18_combo)	C++17	5 / 100	1 ms	388 KiB

combo

#include "bits/stdc++.h"
#include "combo.h"
using namespace std;
#define ff first
#define ss second   
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}

string guess_sequence(int n){
    int x = 0;
    x = press("A");
    string ans = "";
    if(x){
        string s = "BXY";
        do{
            ans = "A";
            for(int i = 0; i <= 1; ++i)
                ans += s[i];
            if(press(ans) == n)
                return ans;
        }while(next_permutation(all(s)));
        for(char &to : s){
            ans = "A";
            for(int i = 0; i <= 1; ++i)
                ans += to;
            if(press(ans) == n)
                return ans;
        }
    }
    x = press("B");
    if(x){
        string s = "AXY";
        do{
            ans = "B";
            for(int i = 0; i <= 1; ++i)
                ans += s[i];
            if(press(ans) == n)
                return ans;
        }while(next_permutation(all(s)));
        for(char &to : s){
            ans = "B";
            for(int i = 0; i <= 1; ++i)
                ans += to;
            if(press(ans) == n)
                return ans;
        }
    }
    x = press("X");
    if(x){
        string s = "ABY";
        do{
            ans = "X";
            for(int i = 0; i <= 1; ++i)
                ans += s[i];
            if(press(ans) == n)
                return ans;
        }while(next_permutation(all(s)));
        for(char &to : s){
            ans = "X";
            for(int i = 0; i <= 1; ++i)
                ans += to;
            if(press(ans) == n)
                return ans;
        }
    }
    // s[0] = 'Y'
    string s = "ABX";
    do{
        ans = "Y";
        for(int i = 0; i <= 1; ++i)
            ans += s[i];
        if(press(ans) == n)
            return ans;
    }while(next_permutation(all(s)));
    for(char &to : s){
        ans = "Y";
        for(int i = 0; i <= 1; ++i)
            ans += to;
        if(press(ans) == n)
            return ans;
    }
    return 0;
}

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