#include<stdio.h>
int resouce[9][9]={	
	/*		0,0,0, 0,4,0, 7,2,0,
			0,4,0, 5,0,0, 9,0,0,
			5,0,0, 0,0,0, 1,4,0,

			0,0,0, 3,0,6, 0,0,2,
			0,5,0, 7,0,0, 8,0,0,
			0,0,4, 9,0,2, 0,0,0,

			6,3,0, 0,0,5, 0,0,4,
			0,1,9, 0,6,0, 0,3,0,
			0,0,0, 0,3,0, 0,0,7
*/0,0,6, 7,0,4, 8,3,0,
						0,0,0, 5,0,3, 2,0,4,
						0,0,4, 8,0,0, 0,7,0,

						0,0,0, 4,8,0, 3,9,7,
						0,4,0, 9,7,2, 0,0,8,
						7,9,8, 3,0,5, 4,0,0,

						4,6,9, 2,5,7, 1,8,3,
						0,5,0, 0,3,8, 0,4,0,
						0,0,0, 0,4,9, 0,0,0
		   };
int check(void);
int check_q(void);
void disp(void);
int i=0,j=0,flag=0;
int r[9][9];
char m;
main()
{   int k;
    for(i=0;i<9;i++)
	for(j=0;j<9;j++)
	r[i][j]=resouce[i][j];
printf("question:\n");
disp();
if(check_q==1)
{printf("question is wrong\n");}
else
{
for(i=0;i<9;i++)
   for(j=0;j<9;j++)
  {
if(resouce[i][j]!=0)
	continue;
else
       { 
	r[i][j]++;
	if(r[i][j]!=10)
	    {
		if(check()==1)
			j--;
		else;
	     }
	else 	
	     {  
		r[i][j]=0;
		do
		{	if(j==0)
			{i--;j=8;}
			else j--;
			if(i<0)
			{flag=1;i=100;j=100;break;}
		}
		while(resouce[i][j]!=0);

		j--;	
	      }
	}

   }
if(flag==1)
printf("there is no solution\n");
else 
	{printf("solution:\n");
	disp();}
}

}

int check_q(void)
{for(i=0;i<9;i++)
   for(j=0;j<9;j++)
if((r[i][j]!=0)&&(check==1))
return 1;

return 0;

}

int check(void)
{
	int row,col,x,y;
	x=(i/3)*3;
	y=(j/3)*3;

	for(col=0;col<j;col++)
	if(r[i][j]==r[i][col]) return 1;
	for(col=j+1;col<9;col++)
	if(r[i][j]==r[i][col]) return 1;


	for(row=0;row<i;row++)
	if(r[i][j]==r[row][j]) return 1;
	for(row=i+1;row<9;row++)
	if(r[i][j]==r[row][j]) return 1;


	for(row=x;row<x+3;row++)
	for(col=y;col<y+3;col++)
	{
	if((row!=i)|(col!=j)) 
		{if(r[i][j]==r[row][col])
		return 1;
		else	;
		}
	else continue;
	}
return 0;
}

void disp(void)
{int i1=0,j1=0;
    for(i1=0;i1<9;i1++)
	for(j1=0;j1<9;j1++)
{printf("%d ",r[i1][j1]);
	if(j1%3==2)
	printf(" ");
	if(j1==8)
	printf("\n");
	if((i1%3==2)&&(j1==8))
	printf("\n");
}
}