Submission #1322425

#	Time	Username	Problem	Language	Result	Execution time	Memory
1322425		seoul_korea	Robot Contest (IOI23_robot)	C++20	Compilation error	0 ms	0 KiB

robot

#include "robot.h"

const int UNVIS = 0;
const int FRONT = 2;
const int DONE  = 3;
const int PATH  = 8;

void add(int c,int w,int s,int e,int n,int Z,char A){
    int S[5] = {c,w,s,e,n};
    set_instruction(S,Z,A);
}

bool empty(int x){ return x >= 0; }

void program_pulibot() {

    int vals[] = {-2,-1,0,2,3,4,5,6,7,8};
    int V = 10;

    for(int i0=0;i0<V;i0++)
    for(int i1=0;i1<V;i1++)
    for(int i2=0;i2<V;i2++)
    for(int i3=0;i3<V;i3++)
    for(int i4=0;i4<V;i4++){
        int c=vals[i0];
        int w=vals[i1];
        int s=vals[i2];
        int e=vals[i3];
        int n=vals[i4];

        // expand BFS frontier
        if(c==FRONT){
            if(w==UNVIS){ add(c,w,s,e,n,4,'W'); continue; }
            if(s==UNVIS){ add(c,w,s,e,n,5,'S'); continue; }
            if(e==UNVIS){ add(c,w,s,e,n,6,'E'); continue; }
            if(n==UNVIS){ add(c,w,s,e,n,7,'N'); continue; }
            add(c,w,s,e,n,DONE,'H');
            continue;
        }

        // follow parent pointers → paint shortest path
        if(c>=4 && c<=7){
            if(c==4) add(c,w,s,e,n,PATH,'E');
            else if(c==5) add(c,w,s,e,n,PATH,'N');
            else if(c==6) add(c,w,s,e,n,PATH,'W');
            else if(c==7) add(c,w,s,e,n,PATH,'S');
            continue;
        }

        // sweeping movement (scan whole grid forever)
        if(empty(e)) add(c,w,s,e,n,c,'E');
        else if(empty(s)) add(c,w,s,e,n,c,'S');
        else add(c,w,s,e,n,c,'T');
    }
}

Compilation message (stderr)

robot.cpp: In function 'void add(int, int, int, int, int, int, char)':
robot.cpp:10:21: error: could not convert '(int*)(& S)' from 'int*' to 'std::vector<int>'
   10 |     set_instruction(S,Z,A);
      |                     ^
      |                     |
      |                     int*