Submission #1002447

#	Time	Username	Problem	Language	Result	Execution time	Memory
1002447		zh_h	Combo (IOI18_combo)	C++17	0 / 100	0 ms	344 KiB

combo

#include <bits/stdc++.h>
#define lint long long
#define pb push_back
#define mp make_pair
using namespace std;

// int press(string p){
//     int temp;
//     cin >> temp;
//     return temp;
// }

int press(string s);

string guess_sequence(int n){
    string one, two, three;

    string ans;

    //* find first letter
    if(press("AB") == 1){
        if(press("B") == 1){ans = "B"; one = "A"; two = "X"; three = "Y";}
        else{ans = "A"; one = "B"; two = "X"; three = "Y";}
        if(press("X") == 1){ans = "X"; one = "A"; two = "B"; three = "Y";}
        else{ans = "Y"; one = "A"; two = "B"; three = "X";}
    }

    int cur = 1;
    while(cur < n-1){
        int temp = press(ans+one + ans+two+one + ans+two+two + ans+two+three);

        if(temp == cur){ans+=three;}
        else if(temp == cur+1){ans+=one;}
        else{ans+=two;}

        cur++;
    }

    if(press(ans+one + ans+two) == n){
        if(press(ans+one) == n){return ans+one;}
        else return ans+two;
    }
    else return ans+three;
}


// int main() {
//     ios_base::sync_with_stdio(false);
//     cin.tie(NULL);

    
//     return 0;
// }

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