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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. using ll = long long ;
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7.     freopen("BAI2.INP","r",stdin);
  8.     freopen("BAI2.OUT","w",stdout);
  9.     ll N, K, B;
  10.     cin >> N >> K >> B;
  11.     vector<ll> a(N);
  12.     for (int i = 0; i < N; i++) {
  13.         cin >> a[i];
  14.     }
  15.     ll s = 0;
  16.     for (ll i = 0; i < K; i++) {
  17.         ll p= (B - 1 + i) % N;
  18.         s += a[p];
  19.     }
  20.     cout << s;
  21.     return 0;
  22. }
Success #stdin #stdout 0.01s 5284KB
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stdin
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5 7 6
1
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5
stdout
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18
https://ideone.com/WobZxy
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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