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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define dandelion ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  4. #define fr(i,a,b) for(long long i=a;i<=b;i++)
  5. #define fd(i,a,b) for(long long i=a;i>=b;i--)
  6.  
  7. using namespace std;
  8.  
  9. int main()
  10. {
  11.     dandelion
  12.  
  13.     int n;
  14.     cin>>n;
  15.     ll r1 = 0, r2 = 0;
  16.     int j = n;
  17.     fr(i,1,n){
  18.     	r1 += i*i;
  19.     	r2 += (i*j);
  20.     	j--;
  21. 	}
  22.     cout<<r1<<" "<<r2;
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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3532661503315 1766451372455
https://ideone.com/VTChFn
language:
C++14 (gcc 8.3)
created:
95 days ago
visibility:
secret

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