题解 | #【模板】差分#

import java.util.*; public class Main{ public static void main(String[] args){ Scanner in = new Scanner(System.in); int n = in.nextInt(); int m = in.nextInt(); long[] arr = new long[n + 1]; for (int i = 0; i < n; i++) { arr[i + 1] = in.nextLong();

    }

    long[] preSum = new long[n + 1];
    while (m-- > 0) {
        int l = in.nextInt();
        int r = in.nextInt();
        int k = in.nextInt();
        preSum[l] += k;

        if (r < n)
            preSum[r + 1] -= k;
    }
    for (int i = 0; i < n; i++) {
        preSum[i + 1] = preSum[i] + preSum[i + 1];
    }
    for (int i = 0; i < n; i++) {
        arr[i + 1] += preSum[i + 1];
        System.out.print(arr[i + 1] + " ");
    }
}

}