| Task: | Alitaulukot |
| Sender: | Ilmari2000 |
| Submission time: | 2018-01-14 19:18:28 +0200 |
| Language: | C++ |
| Status: | READY |
| Result: | 100 |
| group | verdict | score |
|---|---|---|
| #1 | ACCEPTED | 15 |
| #2 | ACCEPTED | 85 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.05 s | 1 | details |
| #2 | ACCEPTED | 0.12 s | 2 | details |
Code
#include <iostream>
#include <vector>
using namespace std;
int main()
{
int n;
cin >> n;
vector<long long int> nums;
nums.resize(n);
for(int i = 0; i < n; i++)
cin >> nums[i];
long long int ret = 0;
for(long long int i = 0; i < n; i++)
ret = (ret + ((i + 1) * (n - i) * nums[i]) % 1000000007) % 1000000007;
cout << ret << endl;
}