#include <stdio.h>
#include <random>
#include <iostream>
using namespace std;

struct pt{
	int x, y;
	pt(){}
	pt(int x_, int y_){ x = x_; y = y_; }
};

int N, P;
const int K = 1000;
pt dat[100002];

int main(){
//	freopen("input.txt","r",stdin);
	scanf("%d %d\n", &N, &P);
	for(int i = 1 ; i <= N ; i ++){
		scanf("%d %d\n", &dat[i].x, &dat[i].y);
	}
	bool ans = false;
	random_device rd;
	for(int i = 1 ; i <= K ; i ++){
		int r1 = rd()%N;
		int r2 = rd()%N;
		if(r1 == r2){
			i --; continue;	
		}
		int dx = dat[r1].x-dat[r2].x;
		int dy = dat[r1].y-dat[r2].y;
		int x0 = dat[r2].x;
		int y0 = dat[r2].y;
		
		int cnt = 0;
		for(int j = 1 ; j <= N ; j ++){
			if((dat[j].y-y0)*dx == dy*(dat[j].x-x0)) cnt ++;
		}
		if(cnt * 100 >= P*N){
			ans = true; break;
		}
	}
	if(ans) printf("possible\n");
	else printf("impossible\n");
	return 0;
}