package yukicoder;

import java.util.*;

public class Q448 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		int[] T = new int[N];
		int[] D = new int[N];
		int max = -1;
		for (int i = 0; i < N; ++i) {
			T[i] = sc.nextInt();
			D[i] = sc.nextInt();
			max = Math.max(max, D[i]);
		}

		{
			assert 1 <= N && N <= 1000;
			assert 1 <= K && K <= 1_000_00;
			for (int i = 0; i < N; ++i) {
				assert 1 <= T[i] && T[i] <= 1_000_00;
				assert 1 <= D[i] && D[i] <= 1_000_00;
				if (i + 1 < N)
					assert T[i] < T[i + 1];
			}

		}

		int left = -1;
		int right = max;

		outer: while (right - left > 1) {
			int middle = (left + right) / 2;

			int preTime = -K;
			for (int i = 0; i < N; ++i) {
				if (D[i] > middle) {
					if (T[i] - preTime < K) {
						left = middle;
						continue outer;
					} else
						preTime = T[i];
				}
			}

			right = middle;
		}

		max = right;
		System.out.println(max);

		int[] count = new int[N];
		int preTime = -K;
		for (int i = 0; i < N; ++i) {
			if (D[i] > max) {
				preTime = T[i];
			} else {
				if (preTime + K <= T[i]) {
					++count[i];
				}
			}
		}
		preTime = T[N - 1] + K;
		for (int i = N - 1; i >= 0; --i) {
			if (D[i] > max) {
				preTime = T[i];
			} else {
				if (preTime >= T[i] + K) {
					++count[i];
				}
			}
		}

		int[] pendingIndex = new int[N];
		int pos = 0;
		for (int i = 0; i < N; ++i) {
			if (count[i] == 2) {
				pendingIndex[pos++] = i;
			}
		}

		pendingIndex = Arrays.copyOf(pendingIndex, pos);

		long[] dp = new long[pos];
		int pre = -1;
		for (int i = 0; i < pos; ++i) {
			while (pre + 1 < pos && T[pendingIndex[i]] >= T[pendingIndex[pre + 1]] + K) {
				++pre;
			}

			if (i > 0)
				dp[i] = dp[i - 1];
			dp[i] = Math.max(dp[i], D[pendingIndex[i]] + (pre >= 0 ? dp[pre] : 0));
		}
		long sum = 0;
		for (int i = 0; i < N; ++i) {
			if (D[i] <= max) {
				sum += D[i];
			}
		}
		System.out.println(sum - (pos > 0 ? dp[pos - 1] : 0));

		sc.close();

	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}