*#include <stdio.h> int main() { int n, m; scanf("%d %d", &n, &m); int arr[n]; for (int i = 0; i < n; i++){ scanf("%d", &arr[i]); } int sum = 0; for (int i = 0; i < m; i++){ sum += arr[i] } int minSum = sum; for (int i = m; i < n; i++) { sum = sum - arr[i - m] + arr[i]; // 更新 sum，减去窗口最前面的事件刺痛值，加上新进入窗口的事件刺痛值（唯一注意点） if (sum < minSum) { minSum = sum; } } printf("%d\n", minSum); return 0; }