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  • CF-835C

    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 ≤ 105, 1 ≤ 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 ≤ 100, 0 ≤ 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 ≤ 109, 1 ≤ x1i < x2i ≤ 100, 1 ≤ 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.

    求出所有点的前缀和,之后对于每个t,计算sum[t][x2][y2]-sum[t][x1-1][y2]-sum[t][x2][y1-1]+sum[t][x1-1][y1-1]并输出。

    AC代码:

     1 #include<bits/stdc++.h>
     2 using namespace std;
     3 
     4 const int MAXN=110;
     5 
     6 int sum[15][MAXN][MAXN];
     7 
     8 int main(){
     9     ios::sync_with_stdio(false);
    10     int n,q,c;
    11     cin>>n>>q>>c;
    12     for(int i=0;i<n;i++){
    13         int x,y,s;
    14         cin>>x>>y>>s;
    15         for(int t=0;t<=c;t++){
    16             sum[t][x][y]+=(s+t)%(c+1);
    17         }
    18     }
    19     for(int i=0;i<=c;i++){
    20         for(int x=1;x<MAXN;x++){
    21             for(int y=1;y<MAXN;y++){
    22                 sum[i][x][y]+=sum[i][x-1][y]+sum[i][x][y-1]-sum[i][x-1][y-1];
    23             }
    24         }
    25     }
    26     for(int i=0;i<q;i++){
    27         int t,x1,y1,x2,y2;
    28         cin>>t>>x1>>y1>>x2>>y2;
    29         t%=(c+1);
    30         cout<<sum[t][x2][y2]-sum[t][x1-1][y2]-sum[t][x2][y1-1]+sum[t][x1-1][y1-1]<<endl;;
    31     }
    32     return 0;
    33 } 
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  • 原文地址:https://www.cnblogs.com/Kiven5197/p/7267363.html
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