Submission #406065

#	Time	Username	Problem	Language	Result	Execution time	Memory
406065		Waratpp123	Combo (IOI18_combo)	C++14	5 / 100	2 ms	292 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
string ans,p;
char a[4];
string guess_sequence(int N) {
    int c1=press("AB"),c;
    int c2=press("AX");
    char f;
    if(c1==0&&c2==0){
        f='Y';
        a[0]='Y';
        a[1]='A';
        a[2]='B';
        a[3]='X';
    }
    if(c1==0&&c2>=1){
        f='X';
        a[0]='X';
        a[1]='A';
        a[2]='B';
        a[3]='Y';
    }
    if(c1>=1&&c2==0){
        f='B';
        a[0]='B';
        a[1]='A';
        a[2]='Y';
        a[3]='X';
    }
    if(c1>=1&&c2>=1){
        f='A';
        a[0]='A';
        a[1]='Y';
        a[2]='B';
        a[3]='X';
    }
    ans=a[0];
    for (int i = 1; i <= N-2; ++i) {
        p.clear();
        p+=ans;
        p+=a[1];
        p+=a[1];
        p+=ans;
        p+=a[1];
        p+=a[2];
        p+=ans;
        p+=a[1];
        p+=a[3];
        p+=ans;
        p+=a[2];
        c=press(p);
        if(c==i) ans.push_back(a[3]);
        if(c==i+1) ans.push_back(a[2]);
        if(c==i+2) ans.push_back(a[1]);
    }
    p.clear();
    p=ans+a[1];
    c=press(p);
    if(c==N) return p;
    p.clear();
    p=ans+a[2];
    c=press(p);
    if(c==N) return p;
    p.clear();
    p=ans+a[3];
    return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:10: warning: variable 'f' set but not used [-Wunused-but-set-variable]
    9 |     char f;
      |          ^

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