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  1. #include <vector>
  2. #include <string>
  3. #include <algorithm>
  4. #include <iostream>
  5. #include <iomanip>
  6.  
  7. using namespace std;
  8.  
  9. int main(int argc, char * argv[])
  10. {
  11. vector<int> v(36000000);
  12. int k = 0;
  13. for(int i = 1; i <= 6000; ++i)
  14. for(int j = 6001; j <= 12000; ++j)
  15. v[k++] = i*j;
  16. sort(v.begin(),v.end());
  17. long long s = 0;
  18. for(int i = 0; i < 36000000; ++i) s += v[i];
  19. cout << s;
  20. }
  21.  
Success #stdin #stdout 1.81s 143548KB
stdin
Standard input is empty
stdout
972216009000000