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- /*
- problem1.c
- From
- https://web.facebook.com/groups/914362352096294/permalink/1320067684859090/
- Write program to solve this:
- x00 + x01 + x02 = 7
- + + +
- x10 + x11 + x12 = 8
- + + -
- x20 + x21 - x22 = 13
- " " "
- 10 13 5
- x[i][j] can be from 0 to 9 including.
- You can find all my C programs at Dragan Milicev's pastebin:
- https://pastebin.com/u/dmilicev
- */
- #include <stdio.h>
- int main(void)
- {
- int i, j, counter=0;
- int x[3][3]; // matrix 3x3 for one solution
- /*
- x[0][0] x[0][1] x[0][2]
- x[1][0] x[1][1] x[1][2]
- x[2][0] x[2][1] x[2][2]
- */
- printf("\n Begin: \n\n");
- for( x[0][0]=0; x[0][0]<=9; x[0][0]++ )
- for( x[0][1]=0; x[0][1]<=9; x[0][1]++ )
- for( x[0][2]=0; x[0][2]<=9; x[0][2]++ )
- for( x[1][0]=0; x[1][0]<=9; x[1][0]++ )
- for( x[1][1]=0; x[1][1]<=9; x[1][1]++ )
- for( x[1][2]=0; x[1][2]<=9; x[1][2]++ )
- for( x[2][0]=0; x[2][0]<=9; x[2][0]++ )
- for( x[2][1]=0; x[2][1]<=9; x[2][1]++ )
- for( x[2][2]=0; x[2][2]<=9; x[2][2]++ )
- {
- if( x[0][0] + x[0][1] + x[0][2] == 7 &&
- x[1][0] + x[1][1] + x[1][2] == 8 &&
- x[2][0] + x[2][1] - x[2][2] == 13 &&
- x[0][0] + x[1][0] + x[2][0] == 10 &&
- x[0][1] + x[1][1] + x[2][1] == 13 &&
- x[0][2] + x[1][2] - x[2][2] == 5 )
- {
- for( i=0; i<=2; i++ ) // print that solution
- {
- for( j=0; j<=2; j++ ) // one row of that matrix
- {
- printf("%2d", x[i][j] );
- }
- }
- printf(" |"); // separate next solution
- counter++; // count number of solutions
- if( counter%3 == 0 ) // print 3 solutions in one line
- {
- printf("\n"); // new line after third solution in one line
- }
- }
- }
- printf("\n\n There are %d solutions.\n", counter);
- return 0;
- } // main()
- /*
- There are 413 solutions.
- Begin:
- 0 0 7 1 4 3 9 9 5 | 0 0 7 1 5 2 9 8 4 | 0 0 7 1 6 1 9 7 3 |
- 0 0 7 1 7 0 9 6 2 | 0 0 7 2 4 2 8 9 4 | 0 0 7 2 5 1 8 8 3 |
- 0 0 7 2 6 0 8 7 2 | 0 0 7 3 4 1 7 9 3 | 0 0 7 3 5 0 7 8 2 |
- 0 0 7 4 4 0 6 9 2 | 0 1 6 1 3 4 9 9 5 | 0 1 6 1 4 3 9 8 4 |
- 0 1 6 1 5 2 9 7 3 | 0 1 6 1 6 1 9 6 2 | 0 1 6 1 7 0 9 5 1 |
- 0 1 6 2 3 3 8 9 4 | 0 1 6 2 4 2 8 8 3 | 0 1 6 2 5 1 8 7 2 |
- 0 1 6 2 6 0 8 6 1 | 0 1 6 3 3 2 7 9 3 | 0 1 6 3 4 1 7 8 2 |
- 0 1 6 3 5 0 7 7 1 | 0 1 6 4 3 1 6 9 2 | 0 1 6 4 4 0 6 8 1 |
- 0 1 6 5 3 0 5 9 1 | 0 2 5 1 2 5 9 9 5 | 0 2 5 1 3 4 9 8 4 |
- 0 2 5 1 4 3 9 7 3 | 0 2 5 1 5 2 9 6 2 | 0 2 5 1 6 1 9 5 1 |
- 0 2 5 1 7 0 9 4 0 | 0 2 5 2 2 4 8 9 4 | 0 2 5 2 3 3 8 8 3 |
- 0 2 5 2 4 2 8 7 2 | 0 2 5 2 5 1 8 6 1 | 0 2 5 2 6 0 8 5 0 |
- 0 2 5 3 2 3 7 9 3 | 0 2 5 3 3 2 7 8 2 | 0 2 5 3 4 1 7 7 1 |
- 0 2 5 3 5 0 7 6 0 | 0 2 5 4 2 2 6 9 2 | 0 2 5 4 3 1 6 8 1 |
- 0 2 5 4 4 0 6 7 0 | 0 2 5 5 2 1 5 9 1 | 0 2 5 5 3 0 5 8 0 |
- 0 2 5 6 2 0 4 9 0 | 0 3 4 1 1 6 9 9 5 | 0 3 4 1 2 5 9 8 4 |
- 0 3 4 1 3 4 9 7 3 | 0 3 4 1 4 3 9 6 2 | 0 3 4 1 5 2 9 5 1 |
- 0 3 4 1 6 1 9 4 0 | 0 3 4 2 1 5 8 9 4 | 0 3 4 2 2 4 8 8 3 |
- 0 3 4 2 3 3 8 7 2 | 0 3 4 2 4 2 8 6 1 | 0 3 4 2 5 1 8 5 0 |
- 0 3 4 3 1 4 7 9 3 | 0 3 4 3 2 3 7 8 2 | 0 3 4 3 3 2 7 7 1 |
- 0 3 4 3 4 1 7 6 0 | 0 3 4 4 1 3 6 9 2 | 0 3 4 4 2 2 6 8 1 |
- 0 3 4 4 3 1 6 7 0 | 0 3 4 5 1 2 5 9 1 | 0 3 4 5 2 1 5 8 0 |
- 0 3 4 6 1 1 4 9 0 | 0 4 3 1 0 7 9 9 5 | 0 4 3 1 1 6 9 8 4 |
- 0 4 3 1 2 5 9 7 3 | 0 4 3 1 3 4 9 6 2 | 0 4 3 1 4 3 9 5 1 |
- 0 4 3 1 5 2 9 4 0 | 0 4 3 2 0 6 8 9 4 | 0 4 3 2 1 5 8 8 3 |
- 0 4 3 2 2 4 8 7 2 | 0 4 3 2 3 3 8 6 1 | 0 4 3 2 4 2 8 5 0 |
- 0 4 3 3 0 5 7 9 3 | 0 4 3 3 1 4 7 8 2 | 0 4 3 3 2 3 7 7 1 |
- 0 4 3 3 3 2 7 6 0 | 0 4 3 4 0 4 6 9 2 | 0 4 3 4 1 3 6 8 1 |
- 0 4 3 4 2 2 6 7 0 | 0 4 3 5 0 3 5 9 1 | 0 4 3 5 1 2 5 8 0 |
- 0 4 3 6 0 2 4 9 0 | 0 5 2 1 0 7 9 8 4 | 0 5 2 1 1 6 9 7 3 |
- 0 5 2 1 2 5 9 6 2 | 0 5 2 1 3 4 9 5 1 | 0 5 2 1 4 3 9 4 0 |
- 0 5 2 2 0 6 8 8 3 | 0 5 2 2 1 5 8 7 2 | 0 5 2 2 2 4 8 6 1 |
- 0 5 2 2 3 3 8 5 0 | 0 5 2 3 0 5 7 8 2 | 0 5 2 3 1 4 7 7 1 |
- 0 5 2 3 2 3 7 6 0 | 0 5 2 4 0 4 6 8 1 | 0 5 2 4 1 3 6 7 0 |
- 0 5 2 5 0 3 5 8 0 | 0 6 1 1 0 7 9 7 3 | 0 6 1 1 1 6 9 6 2 |
- 0 6 1 1 2 5 9 5 1 | 0 6 1 1 3 4 9 4 0 | 0 6 1 2 0 6 8 7 2 |
- 0 6 1 2 1 5 8 6 1 | 0 6 1 2 2 4 8 5 0 | 0 6 1 3 0 5 7 7 1 |
- 0 6 1 3 1 4 7 6 0 | 0 6 1 4 0 4 6 7 0 | 0 7 0 1 0 7 9 6 2 |
- 0 7 0 1 1 6 9 5 1 | 0 7 0 1 2 5 9 4 0 | 0 7 0 2 0 6 8 6 1 |
- 0 7 0 2 1 5 8 5 0 | 0 7 0 3 0 5 7 6 0 | 1 0 6 0 4 4 9 9 5 |
- 1 0 6 0 5 3 9 8 4 | 1 0 6 0 6 2 9 7 3 | 1 0 6 0 7 1 9 6 2 |
- 1 0 6 0 8 0 9 5 1 | 1 0 6 1 4 3 8 9 4 | 1 0 6 1 5 2 8 8 3 |
- 1 0 6 1 6 1 8 7 2 | 1 0 6 1 7 0 8 6 1 | 1 0 6 2 4 2 7 9 3 |
- 1 0 6 2 5 1 7 8 2 | 1 0 6 2 6 0 7 7 1 | 1 0 6 3 4 1 6 9 2 |
- 1 0 6 3 5 0 6 8 1 | 1 0 6 4 4 0 5 9 1 | 1 1 5 0 3 5 9 9 5 |
- 1 1 5 0 4 4 9 8 4 | 1 1 5 0 5 3 9 7 3 | 1 1 5 0 6 2 9 6 2 |
- 1 1 5 0 7 1 9 5 1 | 1 1 5 0 8 0 9 4 0 | 1 1 5 1 3 4 8 9 4 |
- 1 1 5 1 4 3 8 8 3 | 1 1 5 1 5 2 8 7 2 | 1 1 5 1 6 1 8 6 1 |
- 1 1 5 1 7 0 8 5 0 | 1 1 5 2 3 3 7 9 3 | 1 1 5 2 4 2 7 8 2 |
- 1 1 5 2 5 1 7 7 1 | 1 1 5 2 6 0 7 6 0 | 1 1 5 3 3 2 6 9 2 |
- 1 1 5 3 4 1 6 8 1 | 1 1 5 3 5 0 6 7 0 | 1 1 5 4 3 1 5 9 1 |
- 1 1 5 4 4 0 5 8 0 | 1 1 5 5 3 0 4 9 0 | 1 2 4 0 2 6 9 9 5 |
- 1 2 4 0 3 5 9 8 4 | 1 2 4 0 4 4 9 7 3 | 1 2 4 0 5 3 9 6 2 |
- 1 2 4 0 6 2 9 5 1 | 1 2 4 0 7 1 9 4 0 | 1 2 4 1 2 5 8 9 4 |
- 1 2 4 1 3 4 8 8 3 | 1 2 4 1 4 3 8 7 2 | 1 2 4 1 5 2 8 6 1 |
- 1 2 4 1 6 1 8 5 0 | 1 2 4 2 2 4 7 9 3 | 1 2 4 2 3 3 7 8 2 |
- 1 2 4 2 4 2 7 7 1 | 1 2 4 2 5 1 7 6 0 | 1 2 4 3 2 3 6 9 2 |
- 1 2 4 3 3 2 6 8 1 | 1 2 4 3 4 1 6 7 0 | 1 2 4 4 2 2 5 9 1 |
- 1 2 4 4 3 1 5 8 0 | 1 2 4 5 2 1 4 9 0 | 1 3 3 0 1 7 9 9 5 |
- 1 3 3 0 2 6 9 8 4 | 1 3 3 0 3 5 9 7 3 | 1 3 3 0 4 4 9 6 2 |
- 1 3 3 0 5 3 9 5 1 | 1 3 3 0 6 2 9 4 0 | 1 3 3 1 1 6 8 9 4 |
- 1 3 3 1 2 5 8 8 3 | 1 3 3 1 3 4 8 7 2 | 1 3 3 1 4 3 8 6 1 |
- 1 3 3 1 5 2 8 5 0 | 1 3 3 2 1 5 7 9 3 | 1 3 3 2 2 4 7 8 2 |
- 1 3 3 2 3 3 7 7 1 | 1 3 3 2 4 2 7 6 0 | 1 3 3 3 1 4 6 9 2 |
- 1 3 3 3 2 3 6 8 1 | 1 3 3 3 3 2 6 7 0 | 1 3 3 4 1 3 5 9 1 |
- 1 3 3 4 2 2 5 8 0 | 1 3 3 5 1 2 4 9 0 | 1 4 2 0 0 8 9 9 5 |
- 1 4 2 0 1 7 9 8 4 | 1 4 2 0 2 6 9 7 3 | 1 4 2 0 3 5 9 6 2 |
- 1 4 2 0 4 4 9 5 1 | 1 4 2 0 5 3 9 4 0 | 1 4 2 1 0 7 8 9 4 |
- 1 4 2 1 1 6 8 8 3 | 1 4 2 1 2 5 8 7 2 | 1 4 2 1 3 4 8 6 1 |
- 1 4 2 1 4 3 8 5 0 | 1 4 2 2 0 6 7 9 3 | 1 4 2 2 1 5 7 8 2 |
- 1 4 2 2 2 4 7 7 1 | 1 4 2 2 3 3 7 6 0 | 1 4 2 3 0 5 6 9 2 |
- 1 4 2 3 1 4 6 8 1 | 1 4 2 3 2 3 6 7 0 | 1 4 2 4 0 4 5 9 1 |
- 1 4 2 4 1 3 5 8 0 | 1 4 2 5 0 3 4 9 0 | 1 5 1 0 0 8 9 8 4 |
- 1 5 1 0 1 7 9 7 3 | 1 5 1 0 2 6 9 6 2 | 1 5 1 0 3 5 9 5 1 |
- 1 5 1 0 4 4 9 4 0 | 1 5 1 1 0 7 8 8 3 | 1 5 1 1 1 6 8 7 2 |
- 1 5 1 1 2 5 8 6 1 | 1 5 1 1 3 4 8 5 0 | 1 5 1 2 0 6 7 8 2 |
- 1 5 1 2 1 5 7 7 1 | 1 5 1 2 2 4 7 6 0 | 1 5 1 3 0 5 6 8 1 |
- 1 5 1 3 1 4 6 7 0 | 1 5 1 4 0 4 5 8 0 | 1 6 0 0 0 8 9 7 3 |
- 1 6 0 0 1 7 9 6 2 | 1 6 0 0 2 6 9 5 1 | 1 6 0 0 3 5 9 4 0 |
- 1 6 0 1 0 7 8 7 2 | 1 6 0 1 1 6 8 6 1 | 1 6 0 1 2 5 8 5 0 |
- 1 6 0 2 0 6 7 7 1 | 1 6 0 2 1 5 7 6 0 | 1 6 0 3 0 5 6 7 0 |
- 2 0 5 0 4 4 8 9 4 | 2 0 5 0 5 3 8 8 3 | 2 0 5 0 6 2 8 7 2 |
- 2 0 5 0 7 1 8 6 1 | 2 0 5 0 8 0 8 5 0 | 2 0 5 1 4 3 7 9 3 |
- 2 0 5 1 5 2 7 8 2 | 2 0 5 1 6 1 7 7 1 | 2 0 5 1 7 0 7 6 0 |
- 2 0 5 2 4 2 6 9 2 | 2 0 5 2 5 1 6 8 1 | 2 0 5 2 6 0 6 7 0 |
- 2 0 5 3 4 1 5 9 1 | 2 0 5 3 5 0 5 8 0 | 2 0 5 4 4 0 4 9 0 |
- 2 1 4 0 3 5 8 9 4 | 2 1 4 0 4 4 8 8 3 | 2 1 4 0 5 3 8 7 2 |
- 2 1 4 0 6 2 8 6 1 | 2 1 4 0 7 1 8 5 0 | 2 1 4 1 3 4 7 9 3 |
- 2 1 4 1 4 3 7 8 2 | 2 1 4 1 5 2 7 7 1 | 2 1 4 1 6 1 7 6 0 |
- 2 1 4 2 3 3 6 9 2 | 2 1 4 2 4 2 6 8 1 | 2 1 4 2 5 1 6 7 0 |
- 2 1 4 3 3 2 5 9 1 | 2 1 4 3 4 1 5 8 0 | 2 1 4 4 3 1 4 9 0 |
- 2 2 3 0 2 6 8 9 4 | 2 2 3 0 3 5 8 8 3 | 2 2 3 0 4 4 8 7 2 |
- 2 2 3 0 5 3 8 6 1 | 2 2 3 0 6 2 8 5 0 | 2 2 3 1 2 5 7 9 3 |
- 2 2 3 1 3 4 7 8 2 | 2 2 3 1 4 3 7 7 1 | 2 2 3 1 5 2 7 6 0 |
- 2 2 3 2 2 4 6 9 2 | 2 2 3 2 3 3 6 8 1 | 2 2 3 2 4 2 6 7 0 |
- 2 2 3 3 2 3 5 9 1 | 2 2 3 3 3 2 5 8 0 | 2 2 3 4 2 2 4 9 0 |
- 2 3 2 0 1 7 8 9 4 | 2 3 2 0 2 6 8 8 3 | 2 3 2 0 3 5 8 7 2 |
- 2 3 2 0 4 4 8 6 1 | 2 3 2 0 5 3 8 5 0 | 2 3 2 1 1 6 7 9 3 |
- 2 3 2 1 2 5 7 8 2 | 2 3 2 1 3 4 7 7 1 | 2 3 2 1 4 3 7 6 0 |
- 2 3 2 2 1 5 6 9 2 | 2 3 2 2 2 4 6 8 1 | 2 3 2 2 3 3 6 7 0 |
- 2 3 2 3 1 4 5 9 1 | 2 3 2 3 2 3 5 8 0 | 2 3 2 4 1 3 4 9 0 |
- 2 4 1 0 0 8 8 9 4 | 2 4 1 0 1 7 8 8 3 | 2 4 1 0 2 6 8 7 2 |
- 2 4 1 0 3 5 8 6 1 | 2 4 1 0 4 4 8 5 0 | 2 4 1 1 0 7 7 9 3 |
- 2 4 1 1 1 6 7 8 2 | 2 4 1 1 2 5 7 7 1 | 2 4 1 1 3 4 7 6 0 |
- 2 4 1 2 0 6 6 9 2 | 2 4 1 2 1 5 6 8 1 | 2 4 1 2 2 4 6 7 0 |
- 2 4 1 3 0 5 5 9 1 | 2 4 1 3 1 4 5 8 0 | 2 4 1 4 0 4 4 9 0 |
- 2 5 0 0 0 8 8 8 3 | 2 5 0 0 1 7 8 7 2 | 2 5 0 0 2 6 8 6 1 |
- 2 5 0 0 3 5 8 5 0 | 2 5 0 1 0 7 7 8 2 | 2 5 0 1 1 6 7 7 1 |
- 2 5 0 1 2 5 7 6 0 | 2 5 0 2 0 6 6 8 1 | 2 5 0 2 1 5 6 7 0 |
- 2 5 0 3 0 5 5 8 0 | 3 0 4 0 4 4 7 9 3 | 3 0 4 0 5 3 7 8 2 |
- 3 0 4 0 6 2 7 7 1 | 3 0 4 0 7 1 7 6 0 | 3 0 4 1 4 3 6 9 2 |
- 3 0 4 1 5 2 6 8 1 | 3 0 4 1 6 1 6 7 0 | 3 0 4 2 4 2 5 9 1 |
- 3 0 4 2 5 1 5 8 0 | 3 0 4 3 4 1 4 9 0 | 3 1 3 0 3 5 7 9 3 |
- 3 1 3 0 4 4 7 8 2 | 3 1 3 0 5 3 7 7 1 | 3 1 3 0 6 2 7 6 0 |
- 3 1 3 1 3 4 6 9 2 | 3 1 3 1 4 3 6 8 1 | 3 1 3 1 5 2 6 7 0 |
- 3 1 3 2 3 3 5 9 1 | 3 1 3 2 4 2 5 8 0 | 3 1 3 3 3 2 4 9 0 |
- 3 2 2 0 2 6 7 9 3 | 3 2 2 0 3 5 7 8 2 | 3 2 2 0 4 4 7 7 1 |
- 3 2 2 0 5 3 7 6 0 | 3 2 2 1 2 5 6 9 2 | 3 2 2 1 3 4 6 8 1 |
- 3 2 2 1 4 3 6 7 0 | 3 2 2 2 2 4 5 9 1 | 3 2 2 2 3 3 5 8 0 |
- 3 2 2 3 2 3 4 9 0 | 3 3 1 0 1 7 7 9 3 | 3 3 1 0 2 6 7 8 2 |
- 3 3 1 0 3 5 7 7 1 | 3 3 1 0 4 4 7 6 0 | 3 3 1 1 1 6 6 9 2 |
- 3 3 1 1 2 5 6 8 1 | 3 3 1 1 3 4 6 7 0 | 3 3 1 2 1 5 5 9 1 |
- 3 3 1 2 2 4 5 8 0 | 3 3 1 3 1 4 4 9 0 | 3 4 0 0 0 8 7 9 3 |
- 3 4 0 0 1 7 7 8 2 | 3 4 0 0 2 6 7 7 1 | 3 4 0 0 3 5 7 6 0 |
- 3 4 0 1 0 7 6 9 2 | 3 4 0 1 1 6 6 8 1 | 3 4 0 1 2 5 6 7 0 |
- 3 4 0 2 0 6 5 9 1 | 3 4 0 2 1 5 5 8 0 | 3 4 0 3 0 5 4 9 0 |
- 4 0 3 0 4 4 6 9 2 | 4 0 3 0 5 3 6 8 1 | 4 0 3 0 6 2 6 7 0 |
- 4 0 3 1 4 3 5 9 1 | 4 0 3 1 5 2 5 8 0 | 4 0 3 2 4 2 4 9 0 |
- 4 1 2 0 3 5 6 9 2 | 4 1 2 0 4 4 6 8 1 | 4 1 2 0 5 3 6 7 0 |
- 4 1 2 1 3 4 5 9 1 | 4 1 2 1 4 3 5 8 0 | 4 1 2 2 3 3 4 9 0 |
- 4 2 1 0 2 6 6 9 2 | 4 2 1 0 3 5 6 8 1 | 4 2 1 0 4 4 6 7 0 |
- 4 2 1 1 2 5 5 9 1 | 4 2 1 1 3 4 5 8 0 | 4 2 1 2 2 4 4 9 0 |
- 4 3 0 0 1 7 6 9 2 | 4 3 0 0 2 6 6 8 1 | 4 3 0 0 3 5 6 7 0 |
- 4 3 0 1 1 6 5 9 1 | 4 3 0 1 2 5 5 8 0 | 4 3 0 2 1 5 4 9 0 |
- 5 0 2 0 4 4 5 9 1 | 5 0 2 0 5 3 5 8 0 | 5 0 2 1 4 3 4 9 0 |
- 5 1 1 0 3 5 5 9 1 | 5 1 1 0 4 4 5 8 0 | 5 1 1 1 3 4 4 9 0 |
- 5 2 0 0 2 6 5 9 1 | 5 2 0 0 3 5 5 8 0 | 5 2 0 1 2 5 4 9 0 |
- 6 0 1 0 4 4 4 9 0 | 6 1 0 0 3 5 4 9 0 |
- There are 413 solutions.
- */
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