C++实现整数数组区间求和查询问题

```cpp #include <iostream> #include <vector> using namespace std; int main() { int n, m; cin >> n >> m; // 存储数组 a 的元素 vector<int> a(n + 1); for (int i = 1; i <= n; ++i) { cin >> a[i]; } // 存储每次询问的 k vector<int> k(m); for (int i = 0; i < m; ++i) { cin >> k[i]; } // 处理每次询问 for (int i = 0; i < m; ++i) { int sum = 0; for (int j = k[i]; j <= n; ++j) { sum += a[j]; } cout << sum << endl; } return 0; } ``` ######[AI问答 | 227点数解答 | 2026-05-30 19:58:42]