#include <stdio.h>

int ans[5][5];
int main()
{
	int a,b,c;
	scanf("%d%d%d",&a,&b,&c);
	
	for(int i=1;i<=2;i++) for(int j=1;j<=2;j++) ans[i][j] = -1;
	if(a%3==0) ans[1][1] = ans[2][1] = 0;
	if(a%3==1) ans[1][2] = ans[2][2] = 0;
	if(b%3==0) ans[1][1] = ans[1][2] = 0;
	if(b%3==1) ans[2][1] = ans[2][2] = 0;
	for(int i=1;i<=2&&i<=b;i++)
	{
		for(int j=1;j<=2&&j<=a;j++)
		{
			if(ans[i][j]==-1)
			{
				ans[i][j] = c<9?c:9;
				c -= ans[i][j];
			}
		}
	}
	if(c>0) printf("-1");
	else
	{
		for(int i=1;i<=b;i++)
		{
			for(int j=1;j<=a;j++)
			{
				printf("%d",ans[i%3][j%3]);
			}
			printf("\n");
		}
	}
	printf("\n");
}