#include #include using namespace std; bool sudoku(vector > & matrix){ const int product=362880; int line=1; for(auto v:matrix){ line=1; for(auto i:v) line*=i; if(line!=product) return false; } for(int col=0;col<9;col++){ line=1; for(int row=0;row<9;row++) line*=matrix[row][col]; if(line!=product) return false; } for(int row=0,area;row<9;row+=3){ area=1; for(int col=0;col<3;col++){ area*=matrix[row][col]; area*=matrix[row+1][col]; area*=matrix[row+2][col]; } if(area!=product) return false; area=1; for(int col=3;col<6;col++){ area*=matrix[row][col]; area*=matrix[row+1][col]; area*=matrix[row+2][col]; } if(area!=product) return false; area=1; for(int col=6;col<9;col++){ area*=matrix[row][col]; area*=matrix[row+1][col]; area*=matrix[row+2][col]; } if(area!=product) return false; } return true; } void print(vector >& matrix){ for(int row=0;row<9;row++){ for(int col=0;col<9;col++) cout<> grid1{ {3, 5, 2, 9, 1, 8, 6, 7, 4}, {8, 9, 7, 2, 4, 6, 5, 1, 3}, {6, 4, 1, 7, 5, 3, 2, 8, 9}, {7, 8, 3, 5, 6, 9, 4, 2, 1}, {9, 2, 6, 1, 3, 4, 7, 5, 8}, {4, 1, 5, 8, 2, 7, 9, 3, 6}, {8, 6, 4, 3, 7, 5, 8, 9, 2}, {2, 7, 8, 4, 9, 1, 3, 6, 5}, {5, 3, 9, 6, 8, 2, 1, 4, 7} }; vector > grid2{ {3, 5, 2, 9, 1, 8, 6, 7, 4}, {8, 9, 7, 2, 4, 6, 5, 1, 3}, {6, 4, 1, 7, 5, 3, 2, 8, 9}, {7, 8, 3, 5, 6, 9, 4, 2, 1}, {9, 2, 6, 1, 3, 4, 7, 5, 8}, {4, 1, 5, 8, 2, 7, 9, 3, 6}, {1, 6, 4, 3, 7, 5, 8, 9, 2}, {2, 7, 8, 4, 9, 1, 3, 6, 5}, {5, 3, 9, 6, 8, 2, 1, 4, 7} }; cout<