整数序列计算结果查询问题的代码实现

```cpp #include <iostream> using namespace std; const int MAXN = 100010; int a[MAXN], sum[MAXN]; int main() { int n, m; cin >> n >> m; for (int i = 1; i <= n; i++) { cin >> a[i]; if (i % 2 == 1) { sum[i] = sum[i - 1] + a[i]; } else { sum[i] = sum[i - 1] - a[i]; } } for (int i = 0; i < m; i++) { int k; cin >> k; cout << sum[k] << endl; } return 0; } ``` ######[AI问答 | 203点数解答 | 2026-05-30 19:40:32]