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#include <stdio.h>
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int sudoku[9][9];
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//<2F>ж<EFBFBD><D0B6><EFBFBD>
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int in_row(int row, int num) {
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for (int i = 0; i < 9; i++) {
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if (sudoku[row][i] == num) {
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return 1;
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}
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}
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return 0;
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}
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//<2F>ж<EFBFBD><D0B6><EFBFBD>
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int in_col(int col, int num) {
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for (int i = 0; i < 9; i++) {
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if (sudoku[i][col] == num) {
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return 1;
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}
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}
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return 0;
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}
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//<2F>жϹ<D0B6>
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int in_box(int row, int col, int num) {
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int box_row = row / 3 * 3;
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int box_col = col / 3 * 3;
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for (int i = box_row; i < box_row + 3; i++) {
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for (int j = box_col; j < box_col + 3; j++) {
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if (sudoku[i][j] == num) {
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return 1;
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}
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}
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}
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return 0;
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}
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int is_valid(int row, int col, int num) {
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return !in_row(row, num) && !in_col(col, num) && !in_box(row, col, num);
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}
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int solve_sudoku(int row, int col) {
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if (row == 9) {
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return 1;
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}
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if (col == 9) { // <20><><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD>꣬ת<EAA3AC><D7AA><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
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return solve_sudoku(row + 1, 0);
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}
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if (sudoku[row][col] != 0) { // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֣<EFBFBD>ת<EFBFBD><D7AA><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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return solve_sudoku(row, col + 1);
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}
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for (int num = 1; num <= 9; num++) { //ö<>ٻ
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if (is_valid(row, col, num)) {
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sudoku[row][col] = num;
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if (solve_sudoku(row, col + 1)) {
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return 1;
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}
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sudoku[row][col] = 0; // <20><><EFBFBD><EFBFBD>
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}
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}
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return 0;
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}
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int main() {
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for (int i = 0; i < 9; i++) {
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for (int j = 0; j < 9; j++) {
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scanf("%d", &sudoku[i][j]);
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}
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (solve_sudoku(0, 0)) {
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for (int i = 0; i < 9; i++) {
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for (int j = 0; j < 9; j++) {
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printf("%d ", sudoku[i][j]);
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}
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printf("\n");
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}
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} else {
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printf("No solution!\n");
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}
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return 0;
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}
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}
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