Submission #1029715

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029715		Andrey	Robot Contest (IOI23_robot)	C++17	73 / 100	123 ms	6504 KiB

robot

#include "robot.h"
#include<bits/stdc++.h>
using namespace std;
 
bool check(int a, int x) {
    if(a >= 2 && a <= 5 && (a-x+1002)%4 == 0) {
        return true;
    }
    return false;
}
 
void program_pulibot()
{
    char dir[6] = {'z','T','W','S','E','N'};
    for(int c = 0; c <= 7; c++) {
        for(int w = -2; w <= 7; w++) {
            for(int s = -2; s <= 7; s++) {
                for(int e = -2; e <= 7; e++) {
                    for(int n = -2; n <= 7; n++) {
                        if(c == 0) {
                            if(s == -2 && e == -2) {
                                set_instruction({c,w,s,e,n},6,'H');
                                continue;
                            }
                            if(w == -2 && n == -2) {
                                set_instruction({c,w,s,e,n},2,'H');
                            }
                            else if(check(w,2)) {
                                set_instruction({c,w,s,e,n},2,'W');
                            }
                            else if(check(s,3)) {
                                set_instruction({c,w,s,e,n},3,'S');
                            }
                            else if(check(e,4)) {
                                set_instruction({c,w,s,e,n},4,'E');
                            }
                            else if(check(n,5)) {
                                set_instruction({c,w,s,e,n},5,'N');
                            }
                            continue;
                        }
                        if(c == 1) {
                            if(s == -2 && e == -2) {
                                set_instruction({c,w,s,e,n},1,'T');
                                continue;
                            }
                            if(w == 6) {
                                set_instruction({c,w,s,e,n},1,'W');
                            }
                            else if(s == 6) {
                                set_instruction({c,w,s,e,n},1,'S');
                            }
                            else if(e == 6) {
                                set_instruction({c,w,s,e,n},1,'E');
                            }
                            else if(n == 6) {
                                set_instruction({c,w,s,e,n},1,'N');
                            }
                            continue;
                        }
                        if(c == 6) {
                            if(w == 1 || s == 1 || e == 1 || n == 1) {
                                set_instruction({c,w,s,e,n},7,'H');
                                continue;
                            }
                            if(w == -2 && n == -2) {
                                set_instruction({c,w,s,e,n},7,'H');
                                continue;
                            }
                            if(check(w,2)) {
                                set_instruction({c,w,s,e,n},6,'W');
                            }
                            else if(check(s,3)) {
                                set_instruction({c,w,s,e,n},6,'S');
                            }
                            else if(check(e,4)) {
                                set_instruction({c,w,s,e,n},6,'E');
                            }
                            else if(check(n,5)) {
                                set_instruction({c,w,s,e,n},6,'N');
                            }
                            else {
                                if(w == 6) {
                                    set_instruction({c,w,s,e,n},0,'W');
                                }
                                else if(s == 6) {
                                    set_instruction({c,w,s,e,n},0,'S');
                                }
                                else if(e == 6) {
                                    set_instruction({c,w,s,e,n},0,'E');
                                }
                                else if(n == 6) {
                                    set_instruction({c,w,s,e,n},0,'N');
                                }
                            }
                            continue;
                        }
                        if(c == 7) {
                            if(check(w,2)) {
                                set_instruction({c,w,s,e,n},7,'W');
                            }
                            else if(check(s,3)) {
                                set_instruction({c,w,s,e,n},7,'S');
                            }
                            else if(check(e,4)) {
                                set_instruction({c,w,s,e,n},7,'E');
                            }
                            else if(check(n,5)) {
                                set_instruction({c,w,s,e,n},7,'N');
                            }
                            else {
                                if(w == 7) {
                                    set_instruction({c,w,s,e,n},0,'W');
                                }
                                else if(s == 7) {
                                    set_instruction({c,w,s,e,n},0,'S');
                                }
                                else if(e == 7) {
                                    set_instruction({c,w,s,e,n},0,'E');
                                }
                                else if(n == 7) {
                                    set_instruction({c,w,s,e,n},0,'N');
                                }
                                else {
                                    set_instruction({c,w,s,e,n},1,'H');
                                }
                            }
                            continue;
                        }
                        if(w == 7 || s == 7 || e == 7 || n == 7) {
                            set_instruction({c,w,s,e,n},7,'H');
                            continue;
                        }
                        int br = 0;
                        if(s == 6) {
                            br++;
                        }
                        if(w == 6) {
                            br++;
                        }
                        if(e == 6) {
                            br++;
                        }
                        if(n == 6) {
                            br++;
                        }
                        if(br == 1) {
                            set_instruction({c,w,s,e,n},6,'H');
                            continue;
                        }
                        int p,x;
                        if(br == 0) {
                            p = c+1;
                        }
                        else if(br >= 2) {
                            p = c;
                        }
                        if(p == 6) {
                            p-=4;
                        }
                        if(p == 2) {
                            x = w;
                        }
                        else if(p == 3) {
                            x = s;
                        }
                        else if(p == 4) {
                            x = e;
                        }
                        else if(p == 5) {
                            x = n;
                        }
                        if(br >= 2) {
                            set_instruction({c,w,s,e,n},0,dir[p]);
                        }
                        else {
                            if(x == 0 || check(x,p)) {
                                set_instruction({c,w,s,e,n},p,dir[p]);
                            }
                            else {
                                set_instruction({c,w,s,e,n},p,'H');
                            }
                        }
                    }
                }
            }
        }
    }
}

Compilation message (stderr)

robot.cpp: In function 'void program_pulibot()':
robot.cpp:6:30: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
    6 |     if(a >= 2 && a <= 5 && (a-x+1002)%4 == 0) {
      |                             ~^~
robot.cpp:151:31: note: 'x' was declared here
  151 |                         int p,x;
      |                               ^

• Subtask 0: 0 / 0
• Subtask 1: 3 / 6
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 10 / 20
• Subtask 5: 31.9999999994 / 46