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#include <iostream>
#include <cstdio>
#include "intset.cpp"
using namespace std;
typedef SetOfSmallInts Puzzle[9][9];
typedef SetOfSmallInts* PuzzleSection[9];
enum SolutionStatus {solved, unsolvable, working};
void readPuzzle(Puzzle p)
{
char c;
SetOfSmallInts s = rangeSet(1,9);
for(int i =0; i<9; i++)
{
for(int j=0; j < 9; j++)
{
cin >> c;
if(c == '-')
{
p[i][j]=s;
}
else
{
p[i][j] = singletonSet(c-'0');
}
}
}
}
void showSet(PuzzleSection R)
{
for(int i = 1; i <= 9; i++)
{
if(member(i, **R))
{
cout << i;
}
}
}
void printPuzzle(Puzzle p)
{
int i, j;
for(i = 0; i < 9; i++)
{
if (i==3 || i == 6)
{
cout << "\n";
}
for(j = 0; j < 9; j++)
{
if (j == 3 || j == 6) cout << " ";
if(isEmpty(p[i][j]))
{
cout << 0;
}
else if(isSingleton(p[i][j]))
{
showSet(&(p[i][j]));
}
else
{
cout << "-";
}
}
cout << "\n";
}
}
void showPuzzle(Puzzle p)
{
int i, j;
for(i = 0; i < 9; i++)
{
for(j = 0; j < 9; j++)
{
showSet(p[i][j]);
}
cout << "\n";
}
}
/****************************************************************
* SetOfSmallInts *
****************************************************************
* A value of type SetOfSmallInts is a set of the integers from *
* 1 to 9. When you create a variable of type SetofSmallInts, *
* it initially holds an empty set. *
****************************************************************/
struct SetOfSmallInts
{
int ival;
SetOfSmallInts()
{
ival = 0;
}
};
/****************************************************************
* emptySet *
****************************************************************
* emptySet is an empty set. *
****************************************************************/
extern const SetOfSmallInts emptySet;
/****************************************************************
* singletonSet *
****************************************************************
* singletonSet(x) is the set {x}. *
****************************************************************/
SetOfSmallInts singletonSet(int x);
/****************************************************************
* rangeSet *
****************************************************************
* rangeSet(x,y) is the set {x,x+1,...,y}. For example, *
* rangeSet(2,5) is the set {2,3,4,5}. *
****************************************************************/
SetOfSmallInts rangeSet(int x, int y);
/****************************************************************
* size *
****************************************************************
* size(s) returns the number of members of set s. *
****************************************************************/
int size(SetOfSmallInts s);
/****************************************************************
* isEmpty *
****************************************************************
* isEmpty(s) is true if s is an empty set. *
****************************************************************/
bool isEmpty(SetOfSmallInts s);
/****************************************************************
* isSingleton *
****************************************************************
* isSingletonSet(s) is true if s is a singleton set. That is, *
* it is true if s has exactly one member. *
****************************************************************/
bool isSingleton(SetOfSmallInts s);
/****************************************************************
* member *
****************************************************************
* member(x,s) is true if x is a member of s. *
****************************************************************/
bool member(int x, SetOfSmallInts s);
/****************************************************************
* setDifference *
****************************************************************
* setDifference(s,t) is the set of all numbers that are in s, *
* but not in t. *
****************************************************************/
SetOfSmallInts setDifference(SetOfSmallInts s, SetOfSmallInts t);
/****************************************************************
* setUnion *
****************************************************************
* setUnion(s,t) is the set of all numbers that are in either s *
* or t (or both). *
****************************************************************/
SetOfSmallInts setUnion(SetOfSmallInts s, SetOfSmallInts t);
/****************************************************************
* setIntersection *
****************************************************************
* setIntersection(s,t) is the set of all numbers that are in *
* both s and t. *
****************************************************************/
SetOfSmallInts setIntersection(SetOfSmallInts s, SetOfSmallInts t);
/****************************************************************
* insert *
****************************************************************
* insert(x,s) returns the set that you get by adding x to *
* set s. So it is equivalent to setUnion(s, singletonSet(x)). *
****************************************************************/
SetOfSmallInts insert(int x, SetOfSmallInts s);
/****************************************************************
* remove *
****************************************************************
* remove(x,s) returns the set that you get by removing x from *
* set s. So it is equivalent to *
* setDifference(s, singletonSet(x)). *
****************************************************************/
SetOfSmallInts remove(int x, SetOfSmallInts s);
/****************************************************************
* smallest *
****************************************************************
* smallest(s) returns the smallest member of s. If s is empty,*
* then smallest(s) returns 0. *
****************************************************************/
int smallest(SetOfSmallInts s);
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