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답안 #446367

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
446367 2021-07-21T16:59:33 Z ics0503 별자리 3 (JOI20_constellation3) C++17
100 / 100
 825 ms 162016 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include<time.h>
#include<stdio.h>
#include<vector>
#include<algorithm>
#include<set>
using namespace std; 
int a[212121];
struct xy {
	int t,x,y,c;
}all[414141]; int an;
bool sort_y(xy a, xy b) {
	if (a.y != b.y)return a.y > b.y;
	if (a.t != b.t)return a.t < b.t;
	return a.x < b.x;
}
set<pair<int, int>>S; int tn;
vector<int>edge[414141];
vector<pair<int, int>>qr[414141];
int S_start[414141], S_end[414141];
vector<int>S_ER[414141]; int point[414141];
void insert_S(int s, int e,int parent) {
	tn++;
	S.insert({ -s,tn });
	S_start[tn] = s; S_end[tn] = e;
	if (parent) edge[parent].push_back(tn);
}
int pp[414141][20];
long long sparse[414141][20];
vector<int>need_to_fill[414141];
void init_sparse(int w, int bef) {
	pp[w][0] = bef;
	for (int i = 0; pp[w][i] != -1; i++) {
		if(i>0)need_to_fill[pp[w][i]].push_back(w);
		pp[w][i + 1] = pp[pp[w][i]][i];
	}
	for (int nxt : edge[w]) init_sparse(nxt, w);
}
long long D[414141], depth[414141], CS[414141], rev[414141];
void dfs(int w,int bef,int dep) {
	long long sum = 0;
	depth[w] = dep; 
	for (int nxt : edge[w]) {
		dfs(nxt, w, dep + 1);
		sum += D[nxt];
	}
	CS[w] = sum;
	for (int nxt : edge[w]) {
		long long v = sum - D[nxt];
		sparse[nxt][0] = v;
		for (int who : need_to_fill[nxt]) {
			int i = rev[depth[who] - (dep+1)];
			int p = pp[who][i - 1];
			sparse[who][i] = sparse[p][i - 1] + sparse[who][i - 1];
		}
	}
	long long qmax = 0;
	for (auto q : qr[w]) {
		long long res = q.second;
		int now = point[q.first];
		res += CS[now];
		for (int i = 18; i >= 0; i--) {
			int nxt = pp[now][i];
			if (nxt == -1 || depth[nxt] <= depth[w])continue;
			res += sparse[now][i];
			now = nxt;
		}
		if(now!=w)res += sparse[now][0];
		qmax = max(qmax, res);
	}
	D[w] = max(sum, qmax);
}
int ck[414141];
vector<int>erL;
int main() {
	for (int i = 0; i < 18; i++)rev[(1 << i)] = i;
	int n; scanf("%d", &n);
	int i, j;
	for (i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
		all[an++] = { 1,i,a[i],0 };
	}
	int m; scanf("%d", &m);
	long long allS = 0;
	for (i = 1; i <= m; i++) {
		all[an].t = 2;
		scanf("%d%d%d", &all[an].x, &all[an].y, &all[an].c);
		allS += all[an].c;
		an++;
	}
	sort(all, all + an, sort_y);
	int st, en;
	insert_S(1, n, 0);
	int e9 = 1e9;
	for (st = 0; st < an; st = en) {
		for (en = st; all[st].y == all[en].y; en++);
		// [st, en)
		for (i = st; i < en; i++) {
			int t = all[i].t, x = all[i].x, y = all[i].y, c = all[i].c;
			if (t != 1) continue;			
			auto v = S.lower_bound({ -x,-e9 });
			int who = v->second;
			S_ER[who].push_back(x);
			if(ck[who]==0) erL.push_back(who);
			ck[who] = 1;
		}
		for (auto who : erL) {
			int s = S_start[who], e = S_end[who];
			for (i = 0; i < S_ER[who].size(); i++) {
				int x = S_ER[who][i];
				point[x] = who;
				int new_st = s, new_en = x - 1;
				if (new_st <= new_en) insert_S(new_st, new_en, who);
				s = x + 1;
				if (i + 1 == S_ER[who].size()) {
					if (s <= e) insert_S(s, e, who);
				}
			}
			ck[who] = 0;
			S.erase({ -S_start[who], who });
		}
		erL.clear();
		for (i = st; i < en; i++) {
			int t = all[i].t, x = all[i].x, y = all[i].y, c = all[i].c;
			if (t != 2) continue;
			auto v = S.lower_bound({ -x,-e9 });
			if (v == S.end())continue;
			int who = v->second;
			if(S_start[who] <= x && x <= S_end[who]) qr[who].push_back({ x, c });
		}
	}
	for (i = 1; i <= tn; i++)for (j = 0; j < 20; j++)pp[i][j] = -1;
	init_sparse(1, -1);
	dfs(1, -1, 0);
	printf("%lld\n", allS - D[1]);
	return 0;
}

Compilation message

constellation3.cpp: In function 'int main()':
constellation3.cpp:101:36: warning: unused variable 'y' [-Wunused-variable]
  101 |    int t = all[i].t, x = all[i].x, y = all[i].y, c = all[i].c;
      |                                    ^
constellation3.cpp:101:50: warning: unused variable 'c' [-Wunused-variable]
  101 |    int t = all[i].t, x = all[i].x, y = all[i].y, c = all[i].c;
      |                                                  ^
constellation3.cpp:111:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |    for (i = 0; i < S_ER[who].size(); i++) {
      |                ~~^~~~~~~~~~~~~~~~~~
constellation3.cpp:117:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  117 |     if (i + 1 == S_ER[who].size()) {
      |         ~~~~~~^~~~~~~~~~~~~~~~~~~
constellation3.cpp:126:36: warning: unused variable 'y' [-Wunused-variable]
  126 |    int t = all[i].t, x = all[i].x, y = all[i].y, c = all[i].c;
      |                                    ^
constellation3.cpp:79:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
constellation3.cpp:82:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~
constellation3.cpp:85:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |  int m; scanf("%d", &m);
      |         ~~~~~^~~~~~~~~~
constellation3.cpp:89:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |   scanf("%d%d%d", &all[an].x, &all[an].y, &all[an].c);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 39364 KB Output is correct
2 Correct 27 ms 39432 KB Output is correct
3 Correct 31 ms 39432 KB Output is correct
4 Correct 27 ms 39428 KB Output is correct
5 Correct 27 ms 39412 KB Output is correct
6 Correct 27 ms 39412 KB Output is correct
7 Correct 34 ms 39372 KB Output is correct
8 Correct 26 ms 39428 KB Output is correct
9 Correct 31 ms 39312 KB Output is correct
10 Correct 27 ms 39372 KB Output is correct
11 Correct 25 ms 39436 KB Output is correct
12 Correct 27 ms 39348 KB Output is correct
13 Correct 26 ms 39436 KB Output is correct
14 Correct 25 ms 39368 KB Output is correct
15 Correct 27 ms 39336 KB Output is correct
16 Correct 27 ms 39480 KB Output is correct
17 Correct 30 ms 39348 KB Output is correct
18 Correct 26 ms 39372 KB Output is correct
19 Correct 28 ms 39276 KB Output is correct
20 Correct 27 ms 39380 KB Output is correct
21 Correct 27 ms 39332 KB Output is correct
22 Correct 27 ms 39308 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 39364 KB Output is correct
2 Correct 27 ms 39432 KB Output is correct
3 Correct 31 ms 39432 KB Output is correct
4 Correct 27 ms 39428 KB Output is correct
5 Correct 27 ms 39412 KB Output is correct
6 Correct 27 ms 39412 KB Output is correct
7 Correct 34 ms 39372 KB Output is correct
8 Correct 26 ms 39428 KB Output is correct
9 Correct 31 ms 39312 KB Output is correct
10 Correct 27 ms 39372 KB Output is correct
11 Correct 25 ms 39436 KB Output is correct
12 Correct 27 ms 39348 KB Output is correct
13 Correct 26 ms 39436 KB Output is correct
14 Correct 25 ms 39368 KB Output is correct
15 Correct 27 ms 39336 KB Output is correct
16 Correct 27 ms 39480 KB Output is correct
17 Correct 30 ms 39348 KB Output is correct
18 Correct 26 ms 39372 KB Output is correct
19 Correct 28 ms 39276 KB Output is correct
20 Correct 27 ms 39380 KB Output is correct
21 Correct 27 ms 39332 KB Output is correct
22 Correct 27 ms 39308 KB Output is correct
23 Correct 31 ms 40024 KB Output is correct
24 Correct 31 ms 40012 KB Output is correct
25 Correct 29 ms 40040 KB Output is correct
26 Correct 31 ms 40076 KB Output is correct
27 Correct 30 ms 40108 KB Output is correct
28 Correct 33 ms 40048 KB Output is correct
29 Correct 29 ms 40012 KB Output is correct
30 Correct 30 ms 40012 KB Output is correct
31 Correct 30 ms 40080 KB Output is correct
32 Correct 30 ms 40224 KB Output is correct
33 Correct 29 ms 40264 KB Output is correct
34 Correct 30 ms 40204 KB Output is correct
35 Correct 37 ms 40268 KB Output is correct
36 Correct 27 ms 39380 KB Output is correct
37 Correct 27 ms 39372 KB Output is correct
38 Correct 29 ms 40372 KB Output is correct
39 Correct 29 ms 39864 KB Output is correct
40 Correct 29 ms 40096 KB Output is correct
41 Correct 29 ms 39772 KB Output is correct
42 Correct 29 ms 39884 KB Output is correct
43 Correct 29 ms 40068 KB Output is correct
44 Correct 29 ms 39748 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 39364 KB Output is correct
2 Correct 27 ms 39432 KB Output is correct
3 Correct 31 ms 39432 KB Output is correct
4 Correct 27 ms 39428 KB Output is correct
5 Correct 27 ms 39412 KB Output is correct
6 Correct 27 ms 39412 KB Output is correct
7 Correct 34 ms 39372 KB Output is correct
8 Correct 26 ms 39428 KB Output is correct
9 Correct 31 ms 39312 KB Output is correct
10 Correct 27 ms 39372 KB Output is correct
11 Correct 25 ms 39436 KB Output is correct
12 Correct 27 ms 39348 KB Output is correct
13 Correct 26 ms 39436 KB Output is correct
14 Correct 25 ms 39368 KB Output is correct
15 Correct 27 ms 39336 KB Output is correct
16 Correct 27 ms 39480 KB Output is correct
17 Correct 30 ms 39348 KB Output is correct
18 Correct 26 ms 39372 KB Output is correct
19 Correct 28 ms 39276 KB Output is correct
20 Correct 27 ms 39380 KB Output is correct
21 Correct 27 ms 39332 KB Output is correct
22 Correct 27 ms 39308 KB Output is correct
23 Correct 31 ms 40024 KB Output is correct
24 Correct 31 ms 40012 KB Output is correct
25 Correct 29 ms 40040 KB Output is correct
26 Correct 31 ms 40076 KB Output is correct
27 Correct 30 ms 40108 KB Output is correct
28 Correct 33 ms 40048 KB Output is correct
29 Correct 29 ms 40012 KB Output is correct
30 Correct 30 ms 40012 KB Output is correct
31 Correct 30 ms 40080 KB Output is correct
32 Correct 30 ms 40224 KB Output is correct
33 Correct 29 ms 40264 KB Output is correct
34 Correct 30 ms 40204 KB Output is correct
35 Correct 37 ms 40268 KB Output is correct
36 Correct 27 ms 39380 KB Output is correct
37 Correct 27 ms 39372 KB Output is correct
38 Correct 29 ms 40372 KB Output is correct
39 Correct 29 ms 39864 KB Output is correct
40 Correct 29 ms 40096 KB Output is correct
41 Correct 29 ms 39772 KB Output is correct
42 Correct 29 ms 39884 KB Output is correct
43 Correct 29 ms 40068 KB Output is correct
44 Correct 29 ms 39748 KB Output is correct
45 Correct 806 ms 121344 KB Output is correct
46 Correct 775 ms 120372 KB Output is correct
47 Correct 788 ms 119200 KB Output is correct
48 Correct 825 ms 121444 KB Output is correct
49 Correct 803 ms 118568 KB Output is correct
50 Correct 768 ms 118664 KB Output is correct
51 Correct 776 ms 118852 KB Output is correct
52 Correct 822 ms 120628 KB Output is correct
53 Correct 793 ms 120448 KB Output is correct
54 Correct 652 ms 150084 KB Output is correct
55 Correct 640 ms 142216 KB Output is correct
56 Correct 640 ms 141888 KB Output is correct
57 Correct 644 ms 137552 KB Output is correct
58 Correct 241 ms 51396 KB Output is correct
59 Correct 206 ms 51340 KB Output is correct
60 Correct 521 ms 162016 KB Output is correct
61 Correct 355 ms 97624 KB Output is correct
62 Correct 572 ms 135068 KB Output is correct
63 Correct 310 ms 86080 KB Output is correct
64 Correct 375 ms 95568 KB Output is correct
65 Correct 630 ms 136388 KB Output is correct
66 Correct 312 ms 85596 KB Output is correct