#include <stdio.h>
#include <stdlib.h>
#include <time.h>


typedef struct
{
    struct
    {
        int x;
        int y;
    }
    P1;
    struct
    {
        int x;
        int y;
    }
    P2;
    struct
    {
        int x;
        int y;
    }
    P3;

    struct
    {
        int x;
        int y;
    }
    P4;
}
Piste;

int main()
{
    return 0;
}