| Task: | Alitaulukot |
| Sender: | tuomask |
| Submission time: | 2018-01-14 19:43:47 +0200 |
| Language: | C++ |
| Status: | READY |
| Result: | 15 |
| group | verdict | score |
|---|---|---|
| #1 | ACCEPTED | 15 |
| #2 | TIME LIMIT EXCEEDED | 0 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.05 s | 1 | details |
| #2 | TIME LIMIT EXCEEDED | -- | 2 | details |
Code
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n;
ll s=0;
ll m = 1000000007;
int main() {
cin >> n;
ll x[n];
for (int i=0; i<n; i++) cin >> x[i];
for (int i=0; i<n; i++) x[i] *= (n - i);
for (int a=0; a<n; a++)
for (int b=a; b<n; b++)
s = (s + x[b]) % m;
cout << s << "\n";
}