Submission #417127

#	Time	Username	Problem	Language	Result	Execution time	Memory
417127		tqbfjotld	Ancient Machine (JOI21_ancient_machine)	C++17	0 / 100	30 ms	3328 KiB

Anna

#include "Anna.h"
#include <vector>
using namespace std;

///17 bits for 1st X, N bits for isZ
void Anna(int N, std::vector<char> S) {
    int Xpos = -1;
    int Zpos = -1;
    for (int x = 0; x<N; x++){
        if (S[x]=='Z') Zpos = x;
        if (Xpos==-1 && S[x]=='X') Xpos = x;
    }
    for (int x = 16; x>=0; x--){
        Send((bool)(Xpos&(1<<x)));
    }
    for (int x = 0; x<N; x++){
        Send(S[x]=='Z');
    }
}

Bruno

#include "Bruno.h"
#include <vector>
#include <cassert>
using namespace std;


void Bruno(int N, int L, std::vector<int> A) {
    assert(L==N+17);
    int Xpos = 0;
    int Zpos = 0;
    for (int x = 0; x<17; x++){
        Xpos = (Xpos<<1)+A[x];
    }

    if (Xpos==(1<<17)-1){
        for (int x = 0; x<N; x++){
            Remove(x);
        }
        return;
    }
    vector<int> rem;
    for (int x = 0; x<Xpos; x++){
        Remove(x);
    }
    for (int x = Xpos+1; x<N; x++){
        if (A[x-17]){
            while (!rem.empty()){
                Remove(rem.back());
                rem.pop_back();
            }
            Remove(x);
        }
        else{
            rem.push_back(x);
        }
    }
    Remove(Xpos);
    for (auto x : rem){
        Remove(x);
    }
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, std::vector<char>)':
Anna.cpp:8:9: warning: variable 'Zpos' set but not used [-Wunused-but-set-variable]
    8 |     int Zpos = -1;
      |         ^~~~

Bruno.cpp: In function 'void Bruno(int, int, std::vector<int>)':
Bruno.cpp:10:9: warning: unused variable 'Zpos' [-Wunused-variable]
   10 |     int Zpos = 0;
      |         ^~~~

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