控制室大门数字求和问题的C++解决方案

```cpp #include <iostream> using namespace std; const int MAXN = 100005; int a[MAXN], sum[MAXN]; int main() { int n, m; cin >> n >> m; // 输入数组元素并计算前缀和 for (int i = 1; i <= n; i++) { cin >> a[i]; sum[i] = sum[i - 1] + a[i]; } // 处理每次询问 for (int i = 0; i < m; i++) { int k; cin >> k; cout << sum[k] << endl; } return 0; } ``` ######[AI问答 | 184点数解答 | 2026-04-08 20:47:41]