Submission #305336

#	Time	Username	Problem	Language	Result	Execution time	Memory
305336		daveeed	Combo (IOI18_combo)	C++17	30 / 100	59 ms	576 KiB

combo

#include "combo.h"

char terms[4] = {'A', 'B', 'X', 'Y'};

std::string guess_sequence(int N) {
    std::string p = "";
    std::string answer = "";
    int s = -1;
    for(int i = 0; i < N; i++){
        p = answer + terms[0] + answer + terms[1];
        if(press(p) > i){
            if(s == 0){
                answer += terms[1];
                continue;
            }
            if(s == 1){
                answer += terms[0];
                continue;
            }
            p = answer + terms[0];
            if(press(p) > i){
                answer += terms[0];
                if(i == 0)
                    s = 0;
            }
            else{
                answer += terms[1];
                if(i == 0)
                    s = 1;
            }
        }
        else{
            if(s == 2){
                answer += terms[3];
                continue;
            }
            if(s == 3){
                answer += terms[2];
                continue;
            }
            p = answer + terms[2];
            if(press(p) > i){
                answer += terms[2];
                if(i == 0)
                    s = 2;
            }
            else{
                answer += terms[3];
                if(i == 0)
                    s == 3;
            }
        }
    }
    return answer;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:50:23: warning: statement has no effect [-Wunused-value]
   50 |                     s == 3;
      |                     ~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95