| Task: | Alitaulukot |
| Sender: | Kuha |
| Submission time: | 2018-01-14 19:08:08 +0200 |
| Language: | C++ |
| Status: | READY |
| Result: | 100 |
| group | verdict | score |
|---|---|---|
| #1 | ACCEPTED | 15 |
| #2 | ACCEPTED | 85 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.04 s | 1 | details |
| #2 | ACCEPTED | 0.10 s | 2 | details |
Code
#include <bits/stdc++.h>
#define N (1<<17)
#define ll long long
#define ld long double
#define M 1000000007
#define INF 0x5ADFACE5
#define LINF 0x51DEEFFEC7C0DECALL
#define pii pair<int, int>
#define pll pair<long long, long long>
#define F first
#define S second
using namespace std;
int main () {
int n;
cin>>n;
ll ans = 0;
ll t = 0;
for (ll i = 1; i <= n; i++) {
ll x;
cin>>x;
t += x * i;
t %= M;
ans += t;
ans %= M;
}
cout<<ans<<endl;
}