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- #include <fstream>
- using namespace std;
- ifstream fin("sah1.in");
- ofstream fout("sah1.out");
- int p,n,m,ir,jr,it,jt,nr,x[10001],y[10001];
- int main()
- {
- fin>>p;
- fin>>n>>m;
- fin>>ir>>jr;
- for(int i=1;i<=m;++i)
- {
- fin>>it>>jt;
- if(it==ir) ++nr;
- if(jt==jr) ++nr;
- x[it]=1;
- y[jt]=1;
- }
- if(p==1)
- fout<<nr;
- if(p==2)
- {
- int nxi0=0,nyj0=0;
- for(int i=1;i<=n;++i)
- {
- if(x[i]==0)
- ++nxi0;
- if(y[i]==0)
- ++nyj0;
- }
- fout<<nxi0*nyj0;
- }
- return 0;
- }
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