#include <stdio.h>
#include <math.h>
 
typedef struct {
    int x, y;
} Point;
 
int main() {
    int err, n;
    scanf("%d", &err);
    scanf("%d", &n);
 
    Point target, hide_sites[n];
    scanf("%d %d", &target.x, &target.y);
 
    for (int i = 0; i < n; ++i) {
        scanf("%d %d", &hide_sites[i].x, &hide_sites[i].y);
    }
 
    int abort_flag = 1; // Assume abort by default
 
    for (int i = 0; i < n; ++i) {
        int distance_square = (hide_sites[i].x - target.x) * (hide_sites[i].x - target.x) +
                             (hide_sites[i].y - target.y) * (hide_sites[i].y - target.y);
        int error = sqrt(distance_square);
 
        if (error <= err) {
            // If a hide site is found within the allowed error, mission can proceed
            abort_flag = 0;
            break;
        }
    }
 
    if (abort_flag) {
        // No suitable hide site found, output 'abort'
        printf("abort\n");
    } else {
        // A suitable hide site found within the allowed error
        // Do nothing, mission can proceed
    }
 
    return 0;
}
 

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