C. Star sky Codeforces
来源:互联网 发布:mac 端口被占用 编辑:程序博客网 时间:2024/06/05 01:13
The Cartesian coordinate system is set in the sky. There you can see n stars, the i-th has coordinates (xi,yi), a maximum brightnessc, equal for all stars, and an initial brightnesssi (0 ≤ si ≤ c).
Over time the stars twinkle. At moment 0 the i-th star has brightness si. Let at momentt some star has brightness x. Then at moment (t + 1) this star will have brightnessx + 1, if x + 1 ≤ c, and0, otherwise.
You want to look at the sky q times. In thei-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 (x1i,y1i) and the upper right — (x2i,y2i). 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.
The first line contains three integers n,q, c (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. Thei-th from these lines contains three integersxi,yi,si (1 ≤ xi, yi ≤ 100,0 ≤ si ≤ c ≤ 10) — the coordinates ofi-th star and its initial brightness.
The next q lines contain the views description. Thei-th from these lines contains five integersti,x1i,y1i,x2i,y2i (0 ≤ ti ≤ 109,1 ≤ x1i < x2i ≤ 100,1 ≤ y1i < y2i ≤ 100) — the moment of thei-th view and the coordinates of the viewed rectangle.
For each view print the total brightness of the viewed stars.
2 3 31 1 13 2 02 1 1 2 20 2 1 4 55 1 1 5 5
303
3 4 51 1 22 3 03 3 10 1 1 100 1001 2 2 4 42 2 1 4 71 50 50 51 51
3350
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 is2, and brightness of the second is 1, so the answer is 3.
题意:在坐标中给了你很多带有亮度的星星。这些星星随着时间做周期性变化。然后给出q个询问,每一个询问包含了查询区域的位置与当前时间,让你求出这段区域的总亮度是什么。
思路:
预处理到每一个从原点出发到每一个点所围的矩形内星星的个数。
dp【x】【y】【z】就是从1,1点出去到x,y所形成的矩阵中(包括边界)的亮度为z的星星的个数
所以dp【X】【Y】【Z】=dp【X】【Y】【Z】+dp【X-1】【Y】【C】+dp【X】【Y-1】【C】-DP【X-1】【Y-1】【C】
#include<bits/stdc++.h>using namespace std;int dp[120][120][11];int n,q,c;void init(){ for(int i=1; i<=100; i++) for(int j=1; j<=100; j++) for(int c=0; c<=10; c++) dp[i][j][c]+=dp[i-1][j][c]+dp[i][j-1][c]-dp[i-1][j-1][c];}int main(){ while(scanf("%d%d%d",&n,&q,&c)!=EOF) { memset(dp,0,sizeof(dp)); for(int i=0; i<n; i++) { int x,y,b; scanf("%d%d%d",&x,&y,&b); dp[x][y][b]++; } init(); for(int j=0; j<q; j++) { int x,y,x1,y1,t; int ans=0; int sum=0; scanf("%d%d%d%d%d",&t,&x,&y,&x1,&y1); for(int i=0; i<=c; i++) { ans=dp[x1][y1][i]+dp[x-1][y-1][i]-dp[x-1][y1][i]-dp[x1][y-1][i]; ans*=(t+i)%(c+1); sum+=ans; } printf("%d\n",sum); } }}
- C. Star sky Codeforces
- Codeforces 835C-Star sky
- codeforces 835 C Star sky
- Codeforces 835 C Star sky
- CodeForces 835C Star sky
- codeforces 835c Star sky
- Codeforces #835C: Star Sky 题解
- 【Codeforces 835 C. Star sky】+ dp
- CodeForces 835 C.Star sky(水~)
- C. Star sky(Codeforces Round #427 (Div. 2) C)
- codeforces 835C Star sky(二维树状数组)
- Codeforces Round #427 (Div. 2)C. Star sky
- Codeforces Round #427 (Div. 2) C. Star sky
- Codeforces Round #427 (Div. 2)-C. Star sky
- Codeforces Round #427 (Div. 2)C. Star sky(dp)
- (状态方程, 数学)Codeforces Round #427 C. Star sky
- codeforces 835-C. Star sky(dp+前缀和)
- codeforces 835C Star sky (二维数组前缀和)
- CloudStack管理员文档
- 枚举类型的使用
- DevOps企业实践指南(6): 持续集成
- return 关键字
- 每天五分钟linux(12)-more
- C. Star sky Codeforces
- SD 模块的几个增强
- Hololens入门之拍照编辑
- 二分法求方程的根
- 火狐浏览器,改变你的浏览体验
- 博客开始打卡
- Spring MVC
- EXPRESS bodyParser
- CF835B-The number on the board