这个题目是不是卡语言的，C++直接暴力都能过，而Java二维差分都挂了

public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        int n=in.nextInt(),m=in.nextInt();
        int[][] tmp=new int[n+2][n+2];

        for (int i = 1; i <= m; i++) {
            int beginX=in.nextInt(),beginY=in.nextInt(),endX=in.nextInt(),endY=in.nextInt();
            tmp[beginX][beginY]++;
            tmp[endX+1][beginY]--;
            tmp[beginX][endY+1]--;
            tmp[endX+1][endY+1]++;

        }

        in.close();

        for (int i = 1; i <= n; i++) {
            for (int j=1; j <=n; j++) {
                tmp[i][j]+=tmp[i-1][j]+tmp[i][j-1]-tmp[i-1][j-1];
                if(j==n) {
                    System.out.println(tmp[i][j]);
                }else {
                    System.out.print(tmp[i][j]+" ");
                }

            }
        }
    }