Codeforces 835C-Star sky
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The Cartesian coordinate system is set in the sky. There you can see n stars, the i-th has coordinates (xi, yi), 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 (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. The i-th from these lines contains three integers xi, yi, si (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 ti, x1i, y1i, x2i, y2i (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.
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 is 2, and brightness of the second is 1, so the answer is 3.
题意:给出 n个星星的坐标和它们的亮度si,星星最大亮度为c,t秒后星星的亮度为(si+t)%(c+1),q次询问,每次询问一个区间内t秒后星星的亮度和
解题思路:开一个三维数组,记录每个前缀亮度为si的星星的个数即可
#include <iostream> #include <cstdio> #include <cstring> #include <string> #include <algorithm> #include <map> #include <set> #include <stack> #include <queue> #include <vector> #include <bitset> #include <functional>using namespace std;#define LL long long const int INF = 0x3f3f3f3f;int a[105][105][15];int n, q, c;int x[100005], y[100005], s[100005];int main(){while (~scanf("%d%d%d", &n, &q, &c)){memset(a, 0,sizeof a);for (int i = 1; i<=n; i++){scanf("%d%d%d", &x[i], &y[i], &s[i]);a[x[i]][y[i]][s[i]]++;}for (int i = 0; i <= 10; i++)for (int j = 1; j<102; j++)for (int k = 1; k<102; k++)a[j][k][i] += (a[j - 1][k][i] + a[j][k - 1][i] - a[j - 1][k - 1][i]);while (q--){int t, x1, y1, x2, y2;scanf("%d%d%d%d%d", &t, &x1, &y1, &x2, &y2);int ans = 0;for (int i = 0; i <= 10; i++){int k = a[x2][y2][i] - a[x1 - 1][y2][i] - a[x2][y1 - 1][i] + a[x1 - 1][y1 - 1][i];int kk = (t + i) % (c + 1);ans += (k*kk);}printf("%d\n", ans);}}return 0;}
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