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- #include <iostream>
- using namespace std;
- int main()
- {
- ios::sync_with_stdio(0);
- int t, n, k, f[3030], s[3030];
- long long int sum=0, cn=0, tem;
- cin >> t;
- for(int i=0;i<t;i++)
- {
- cin >> n >> k;
- for(int q=0;q<n;q++)
- {
- for(int y=0;y<3;y++)
- {
- cin >> f[y];
- }
- for(int j=0;j<3;j++)
- {
- for(int r=0;r<2;r++)
- {
- if(f[r]>f[r+1])
- {
- tem = f[r+1];
- f[r+1] = f[r];
- f[r] = tem;
- }
- }
- }
- s[cn] = f[0];
- cn++;
- s[cn] = f[1];
- cn++;
- }
- for(int j=0;j<2*n;j++)
- {
- for(int r=0;r<(2*n)-1;r++)
- {
- if(s[r]>s[r+1])
- {
- tem = s[r+1];
- s[r+1] = s[r];
- s[r] = tem;
- }
- }
- }
- for(int y=0;y<k;y++)
- {
- sum+=s[y];
- }
- cout << sum << endl;
- sum = 0;
- cn = 0;
- }
- return 0;
- }
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