답안 #3955

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
3955	2013-08-31T09:41:35 Z	wookayin	Evaluation (kriii1_E)	C++	0 / 1	76 ms	65536 KB

E

#pragma warning(disable:4996)
#pragma pack(1)

#include <algorithm>
#include <functional>
#include <cstdio>
#include <iostream>
#include <vector>

using namespace std;

struct Event {
	int x;
	int y1, y2;
	int flag;
	Event(int x, int y1, int y2, int flag) : x(x), y1(y1), y2(y2), flag(flag) {}
};

bool operator < (const Event &A, const Event &B) {
	if(A.x != B.x) return A.x < B.x;
	else return A.flag < B.flag;	//-가 먼저
}

int n;
vector<Event> events;
const long long MOD = 1000000007;


struct node {
	int L, R;

	int common_value;	// lazy propagated value
	long long sum;
	long long sum_square;

	node &getLeft();
	node &getRight();

	node() {
		L = R = -1;
		common_value = 0;
		sum = 0;
		sum_square = 0;
	}

	inline int leftSum();
	inline int rightSum();
	inline int leftSumSquare();
	inline int rightSumSquare();
};

node POOL[2200000];
int POOL_SZ = 0;

node root;

node & node::getLeft() {
	if(L == -1) L = POOL_SZ++;
	return POOL[L];
}
node & node::getRight() {
	if(R == -1) R = POOL_SZ++;
	return POOL[R];
}
inline int node::leftSum() { return L == -1 ? 0 : POOL[L].sum; }
inline int node::rightSum() { return R == -1 ? 0 : POOL[R].sum; }
inline int node::leftSumSquare() { return L == -1 ? 0 : POOL[L].sum_square; }
inline int node::rightSumSquare() { return R == -1 ? 0 : POOL[R].sum_square; }

long long getLength(long long l, long long r) {
	if(l < r) return r - l + 1;
	return 0;
}

inline long long _(long long v) {
	return v % MOD;
}

void update(long long l, long long r, long long val, node &t = root, unsigned x = 0, unsigned y = 1073741823) {
	int len = y-x+1;
	if(l <= x && y <= r) {
		// 구간이 포함됨.
		t.common_value += val;
		t.common_value %= MOD;

		t.sum_square += _(2 * t.sum * val) + _(_(val * val) * len);
		t.sum_square %= MOD;

		t.sum += val * len;
		t.sum %= MOD;
		return;
	}

	unsigned mid = (x + y) / 2;
	// [x, mid]
	if(l <= mid) { // 왼쪽구간에 겹침ㄴ
		update(l, r, val, t.getLeft(), x, mid);
	}
	if(mid < r) { // 오른쪽 구간에 겹침
		update(l, r, val, t.getRight(), mid + 1, y);
	}

	t.sum = _(t.leftSum() + t.rightSum()) + _(len * (long long)t.common_value);
	t.sum %= MOD;

	// 업데이트
	t.sum_square = _(t.leftSumSquare() + t.rightSumSquare())
		+ _(2 * _((t.leftSum() + t.rightSum()) * (long long)t.common_value)) 
		+ _(_((long long)t.common_value * t.common_value) * len);
	t.sum_square %= MOD;
}

long long query(node &t = root) {
	return t.sum_square % MOD;
}

long long go() {
	long long last_x = -1;
	long long x;

	long long ans = 0;
	for(int i = 0; i < events.size(); ) {

		x = events[i].x;

		// 이 시점에서 면적을 더한다.
		if(last_x != -1) {
#ifdef DEBUG
			fprintf(stderr, "<sum> s = %lld, dx = %d \n", query(), x-last_x);
#endif
			ans += query() * (x - last_x);
			ans %= MOD;
		}

		int j;
		for(j = i; j < events.size() && events[j].x == events[i].x; ++ j);
		--j; // [i, j] 는 같은 x를 가짐

		for(; i <= j; ++ i) {
			update(events[i].y1, events[i].y2, events[i].flag, root);
#ifdef DEBUG
			fprintf(stderr, "x=%lld, update [%d, %d] with  %d", x, events[i].y1, events[i].y2, events[i].flag);
			fprintf(stderr, " : %lld <sum=%lld>\n", root.sum_square, root.sum);
#endif
		}

		last_x = x;
	}

	return ans;
}

int main() {
#ifdef DEBUG
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif

	scanf("%d", &n);
	for(int i = 0; i < n; ++ i) {
		int a,b,c,d,p;
		scanf("%d %d %d %d %d", &a, &b, &c, &d, &p);

		events.push_back( Event(a, b, d, +p) );
		events.push_back( Event(c+1, b, d, -p) );
	}
	sort(events.begin(), events.end());

	cout << go() << endl;

	return 0;
}

Subtask #1

0.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	61832 KB	Output is correct
2	Correct	12 ms	61832 KB	Output is correct
3	Correct	16 ms	61832 KB	Output is correct
4	Correct	16 ms	61832 KB	Output is correct
5	Correct	4 ms	61832 KB	Output is correct
6	Correct	12 ms	61832 KB	Output is correct
7	Correct	12 ms	61832 KB	Output is correct
8	Correct	4 ms	61832 KB	Output is correct
9	Correct	16 ms	61832 KB	Output is correct
10	Correct	16 ms	61832 KB	Output is correct
11	Correct	32 ms	62604 KB	Output is correct
12	Correct	60 ms	62604 KB	Output is correct
13	Correct	56 ms	62604 KB	Output is correct
14	Correct	68 ms	62604 KB	Output is correct
15	Correct	76 ms	62604 KB	Output is correct
16	Memory limit exceeded	36 ms	65536 KB	Memory limit exceeded
17	Halted	0 ms	0 KB	-