#include <stdio.h>

struct node {
        int count;
        int index;
};


int main()
{
        int i;
        char arr[] = {12, 2, 5, 9, 10, 0, 11, 1, 3, 4, 0, 13, 6, 7, 8};
        struct node result[10] = {0};
        int now = 0;

        //////////////////////////////////////////////////////////////
        for( i = 0; i < sizeof(arr); i++ ) {
                if( arr[i] == 0 ) {
                        now++;
                        continue;
                }

                if( result[now].count == 0 )
                        result[now].index = i;

                result[now].count++;
        }
        //////////////////////////////////////////////////////////////


        for( i = 0; i < now+1; i++ ) {
                printf("%d %d\n", result[i].index, result[i].count);
        }

        return 0;
}