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- int a[21][21], i, j, n, s=0, c=0;
- cin>>n;
- for(i=1; i<=n; i++)
- for(j=1; j<=n; j++)
- cin>>a[i][j];
- for(i=1; i<=n; i++)
- for(j=1; j<=n; j++)
- {
- if(i<j && a[i][j]>0)
- {
- s=s+a[i][j];
- c++;
- }
- }
- cout<<s<<endl<<c<<endl;
- cout<<(s/c)*1.00; ///????
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