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- #include <fstream>
- #define N 101
- using namespace std;
- ifstream fin("graf_partial_1.in");
- ofstream fout("graf_partial_1.out");
- int n, a[N][N];
- int gmax, gmin, g[N],ct;
- void Citire()
- {
- int x,y;
- fin>>n;
- while(fin>>x>>y)
- a[x][y]=a[y][x]=1;
- }
- void Grade()
- {
- int i,j;
- for(i=1;i<=n;i++)
- for(j=1;j<=n;j++)if(a[i][j])g[i]++;
- gmin=n+1, gmax=-1;
- for(i=1;i<=n;i++)
- {
- if(gmin>g[i])gmin=g[i];
- if(gmax<g[i])gmax=g[i];
- }
- }
- void Elim()
- {
- int i,j;
- for(i=1;i<n;i++)
- for(j=i+1;j<=n;j++)
- if(a[i][j]==1)
- {
- if(gmin==g[i] && gmax==g[j])
- a[i][j]=a[j][i]=0, ct++;
- if(gmin==g[j] && gmax==g[i])
- a[i][j]=a[j][i]=0, ct++;
- }
- }
- void Afis()
- {
- int i,j;
- fout<<ct<<'\n';
- for(i=1;i<=n;i++)
- {
- for(j=1;j<=n;j++)
- fout<<a[i][j]<<' ';
- fout<<'\n';
- }
- }
- int main()
- {
- Citire();
- Grade();
- Elim();
- Afis();
- return 0;}
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