Task: | Alitaulukot |
Sender: | ollpu |
Submission time: | 2018-01-14 19:06:53 +0200 |
Language: | C++ |
Status: | READY |
Result: | 100 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 15 |
#2 | ACCEPTED | 85 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.07 s | 1 | details |
#2 | ACCEPTED | 0.06 s | 2 | details |
Code
#include <iostream> using namespace std; const int M = 1e9+7; int main() { ios::sync_with_stdio(0); cin.tie(0); int n; cin >> n; long s = 0; for (int i = 0; i < n; ++i) { long v; cin >> v; s += v*(i+1)*(n-i); s %= M; } cout << s << endl; }