Submission #861833

#	Time	Username	Problem	Language	Result	Execution time	Memory
861833		imarn	Combo (IOI18_combo)	C++14	0 / 100	0 ms	344 KiB

combo

#include<bits/stdc++.h>
int press(std::string p);
std::string guess_sequence(int N){
    std::string ans="";
  	if(N==0)return ans;
    char s[4];
    if(press("A")==1)ans="A",s[0]='A',s[1]='B',s[2]='X',s[3]='Y';
    else if(press("B")==1)ans="B",s[0]='B',s[1]='A',s[2]='X',s[3]='Y';
    else if(press("X")==1)ans="X",s[0]='X',s[1]='B',s[2]='A',s[3]='Y';
    else ans="Y",s[0]='Y',s[1]='B',s[2]='X',s[3]='A';
    for(int i=2;i<=N-1;i++){
        std::string now1 = ans;now1+=s[1];
        std::string now2 = ans;now2+=s[2];now2+=s[1];
        std::string now3 = ans;now3+=s[2];now3+=s[2];
        std::string now4 = ans;now4+=s[2];now4+=s[3];
        std::string tt = now1+now2+now3+now4;
        int x = press(tt);
        if(x==i-1)ans = ans+s[3];
        else if(x==i)ans = ans+s[1];
        else ans = ans+s[2];
    }
    std::string tt1=ans;tt1+=s[1];
    std::string tt2=ans;tt2+=s[2];
  	return ans+"A";
}

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