Submission #956189

#	Time	Username	Problem	Language	Result	Execution time	Memory
956189		Dan4Life	Robot Contest (IOI23_robot)	C++17	24 / 100	107 ms	5772 KiB

robot

#include "robot.h"
#include <bits/stdc++.h>
using namespace std;
// 0 = unvisited                    (white)
// 1 = final visit                  (yellow)
// 2 = temp. visit                  (blue)
// 3 = blocked                      (red)
int boundary = -2;
int white = 0, yellow = 1, blue = 2, red = 3;
string dir = "WSENHT";
int i, j, k, l, m;

char get_dir(int col){
    int pos = 4;
    if(j==col) pos=0;
    else if(k==col) pos=1;
    else if(l==col) pos=2;
    else if(m==col) pos=3;
    return dir[pos];
}

bool exists_neighbour(int col){
    return j==col or k==col or l==col or m==col;
}

void program_pulibot()
{
    for(i = 0; i <= 3; i++){
        for(j = -2; j <= 3; j++){
            for(k = -2; k <= 3; k++){
                for(l = -2; l <= 3; l++){
                    for(m = -2; m <= 3; m++){

                        if(k==boundary and l==boundary){
                            // final location, start coloring with yellow, go back to last blue
                            set_instruction({i,j,k,l,m},yellow,get_dir(blue));
                        }
                        else if(exists_neighbour(yellow)){ 
                            // if yellow somewhere, we are in the final phase

                            if(exists_neighbour(red)){
                                // firstly if there's red cell, go there while marking here as yellow
                                set_instruction({i,j,k,l,m},yellow,get_dir(red));
                            }
                            else if(exists_neighbour(blue)){
                                // if no red cell, but there are blue cells, go there
                                set_instruction({i,j,k,l,m},yellow,get_dir(blue));
                            }
                            else if(j==boundary and m==boundary){
                                // starting location we can terminate now
                                set_instruction({i,j,k,l,m},yellow,'T');
                            }
                            else{
                                // if we are in a blocked place already, clear it, traverse back
                                set_instruction({i,j,k,l,m},white,get_dir(yellow));
                            }
                        }
                        else if(exists_neighbour(white)){
                            // if still in the exploration phase and we can explore:
                            // go to the next unvisited position, randomly
                            set_instruction({i,j,k,l,m},blue,get_dir(white));
                        }
                        else if(exists_neighbour(blue)){
                            // no where to go, mark as blocked, backtrack
                            set_instruction({i,j,k,l,m},red,get_dir(blue));
                        }
                    }
                }
            }
        }
    }
}

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 0 / 10
• Subtask 3: 18 / 18
• Subtask 4: 0 / 20
• Subtask 5: 0 / 46