• Codeforces Round #427 (Div. 2) C Star sky


    C. Star sky
    time limit per test
    2 seconds
    memory limit per test
    256 megabytes
    input
    standard input
    output
    standard output

    The Cartesian coordinate system is set in the sky. There you can see n stars, the i-th has coordinates (xiyi), a maximum brightness c, equal for all stars, and an initial brightness si (0 ≤ si ≤ c).

    Over time the stars twinkle. At moment 0 the i-th star has brightness si. Let at moment t some star has brightness x. Then at moment (t + 1) this star will have brightness x + 1, if x + 1 ≤ c, and 0, otherwise.

    You want to look at the sky q times. In the i-th time you will look at the moment ti and you will see a rectangle with sides parallel to the coordinate axes, the lower left corner has coordinates (x1iy1i) and the upper right — (x2iy2i). For each view, you want to know the total brightness of the stars lying in the viewed rectangle.

    A star lies in a rectangle if it lies on its border or lies strictly inside it.

    Input

    The first line contains three integers nqc (1 ≤ n, q ≤ 1051 ≤ c ≤ 10) — the number of the stars, the number of the views and the maximum brightness of the stars.

    The next n lines contain the stars description. The i-th from these lines contains three integers xiyisi (1 ≤ xi, yi ≤ 1000 ≤ si ≤ c ≤ 10) — the coordinates of i-th star and its initial brightness.

    The next q lines contain the views description. The i-th from these lines contains five integers tix1iy1ix2iy2i (0 ≤ ti ≤ 1091 ≤ x1i < x2i ≤ 1001 ≤ y1i < y2i ≤ 100) — the moment of the i-th view and the coordinates of the viewed rectangle.

    Output

    For each view print the total brightness of the viewed stars.

    Examples
    input
    2 3 3
    1 1 1
    3 2 0
    2 1 1 2 2
    0 2 1 4 5
    5 1 1 5 5
    
    output
    3
    0
    3
    
    input
    3 4 5
    1 1 2
    2 3 0
    3 3 1
    0 1 1 100 100
    1 2 2 4 4
    2 2 1 4 7
    1 50 50 51 51
    
    output
    3
    3
    5
    0
    
    Note

    Let's consider the first example.

    At the first view, you can see only the first star. At moment 2 its brightness is 3, so the answer is 3.

    At the second view, you can see only the second star. At moment 0 its brightness is 0, so the answer is 0.

    At the third view, you can see both stars. At moment 5 brightness of the first is 2, and brightness of the second is 1, so the answer is 3.


    写到一半断网了。。。很绝望啊

    容易发现c++后取模

    应该是每一个(x+t%c)%c

    但是我试图把几个x合起来

    然后直接(sumx+有几个*t)然后去%c

    很明显是不对的

    只可以把%拆到括号里而不能把括号里的取出来

    所以我们要另开一维 t%c

    这样就可以分开存了

    还有注意注意矩形是f[t][x2][y2]-f[t][x1-1][y2]-f[t][x2][y1-1]+f[t][x1-1][y1-1]

    #include<cstdio>
    #include<cstdlib>
    int f[15][105][105];
    int main()
    {
    	int n,q,c;
    	scanf("%d %d %d",&n,&q,&c);
    	c++;
    	int x,y,s;
    	for(int i=1;i<=n;i++)
    	{
    		scanf("%d %d %d",&x,&y,&s);
    		for(int t=0;t<c;t++)
    		f[t][x][y]+=(s+t)%c;
    	}
    	for(int t=0;t<c;t++)
    	for(int i=1;i<=100;i++)
    	for(int j=1;j<=100;j++)
    	f[t][i][j]+=f[t][i-1][j]+f[t][i][j-1]-f[t][i-1][j-1];
    	int t,x1,y1,x2,y2;
    	for(int i=1;i<=q;i++)
    	{
    		scanf("%d %d %d %d %d",&t,&x1,&y1,&x2,&y2);
    		t%=c;
    		printf("%d
    ",f[t][x2][y2]-f[t][x1-1][y2]-f[t][x2][y1-1]+f[t][x1-1][y1-1]);
    	}
    	return 0;
    }

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  • 原文地址:https://www.cnblogs.com/Brian551/p/7352997.html
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