B1023

#include<cstdio>

int main()
{
	int count[10];
	for(int i=0;i<10;i++)
	{
		scanf("%d",&count[i]);//input ten digits map number 0~9
	}
	for(int i=1;i<10;i++)
	{
		if(count[i]>0)
		{
			printf("%d",i);//coz the array index is number 0~9,and the first cant be zero,so for begin with 1
			count[i]--;
			break;
		}
	}
	for(int i=0;i<10;i++)
	{
		for(int j=0;j<count[i];j++)//and subsequent,output the numbers from small to big
		printf("%d",i);
	}
	
	return 0;
}