Submission #101652

#	Time	Username	Problem	Language	Result	Execution time	Memory
101652		lolicon	Combo (IOI18_combo)	C++14	5 / 100	2 ms	220 KiB

combo

#include "combo.h"
#include<algorithm>
std::string guess_sequence(int N){
    std::string s, p, c = {"ABXY"};
    int i,j,t,coin = 0;
    if(press("AB")){
        if(press("A"))
            s+= "A", std::swap(c[0],c[3]);
        else
            s+= "B", std::swap(c[1],c[3]);
    } else {
        if(press("X"))
            s+= "X", std::swap(c[2],c[3]);
        else
            s+= "Y";
    } coin++;

    for(i=1;i<N-1;i++){
        t = press(s+c[0]+s+c[1]+c[2]+s+c[1]+c[1]+s+c[1]+c[0]) - coin;
        if(t == 1){
            s+=c[0];
        } else if(t == 2){
            s+=c[1];
        } else {
            s+=c[2];
        }
        coin++;
    }
    if(press(s+c[0])==coin+1) s+=c[0];
    else if(press(s+c[1])==coin+1) s+=c[1];
    else s+=c[2];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:5:11: warning: unused variable 'j' [-Wunused-variable]
    5 |     int i,j,t,coin = 0;
      |           ^

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