#include <stdio.h>
#include <stdlib.h>
/*
	int N, F;
	int *vol;
	double *time;
	int *speed;
	double totalT;

int min(){
	int m = 0;
	double minimum = 1024*1024*1024*2-1;
	int i;
	for(i = 0; i < N; i++){
		if((time[i] > totalT)&&(time[i] < minimum)){
			minimum = time[i];
			m = i;
		}
	}
	return m;
}
*/
int main() {
	int count, speed;
	while (scanf("%d %d", &count, &speed) > 0) {
		int *capacity = (int*)malloc(count * sizeof(int));
		int *rate = (int*)malloc(count * sizeof(int));
		double *time = (double*)malloc(count * sizeof(double));
		int i = 0;
		for (i = 0; i < count; i++) {
			scanf("%d", capacity + i);
			rate[i] = speed;
			time[i] = 0;
		}
		double this_t, prev_t;
		double max_t = 0;
		for (i = 0; i < count; i++) {
			if (i == 0)
				this_t = (double)capacity[i]/(double)rate[i];
			else {
				this_t = (double)capacity[i]/(double)rate[i];
				prev_t = time[i-1];
				if (prev_t < this_t) {
					this_t = prev_t + ((double)capacity[i] - (double)rate[i] * prev_t) / (double)(rate[i] + rate[i-1]);
					rate[i] += rate[i-1];
				}
			}
			time[i] = this_t;
			if (this_t > max_t) max_t = this_t;
		}
		printf("%g %g\n", time[count-1], max_t);
	}
/*
	int i, i;
	int minimum;
	while (scanf("%d %d", &N, &F) > 0){
		vol = (int*)malloc(N*sizeof(int));
		time = (int*)malloc(N*sizeof(int));
		speed = (int*)malloc(N*sizeof(int));
		for(i = 0; i < N; i++){
			scanf("%d", vol + i);
			speed[i] = F;
			time[i] = (double)((double)vol[i] / (double)speed[i]);
		}
		for(i = 0; i < N; i++){
			minimum = min();
			totalT += time[minimum];
			j = minimum;
			while((j < count) && (time[j] > totalT)){
				j++;
			}
			if(j > count - 1)
		}
	}

*/
	return 0;
}