import java.util.Arrays;

import java.util.Scanner;

public class Main

{

public static void main(String[] args)

{

Scanner scanner = new Scanner(System.in);

int m = scanner.nextInt();

int[][] count = new int[m][2];

int[] max = new int[m+1];

for(int i=0;i<m;i++)

{

count[i][0] = scanner.nextInt();

count[i][1] = 0;

max[i] = 0;

}

for (int i = 0; i < m; i++)

{

for (int j = 1; j <= m; j++)

{

if (max[j] + count[i][0] <= 100)

{

max[j] += count[i][0];

count[i][1] = j;

break;

}

}

}

int temp=1;

for(int i=0;i<m;i++)

{

if (count[i][1] > temp)

{

temp = count[i][1];

}

}

for(int i=0;i<m;i++)

{

System.out.println(count[i][0] + " " + count[i][1]);

}

System.out.println(temp);

}

}