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답안 #446365

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
446365 2021-07-21T16:48:01 Z ics0503 별자리 3 (JOI20_constellation3) C++17
100 / 100
 1181 ms 431196 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][20];
void init_sparse(int w, int bef) {
	pp[w][0] = bef;
	for (int i = 0; pp[w][i] != -1; i++) {
		need_to_fill[pp[w][i]][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];
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 i = 1; i < 18; i++) {
			for (int who : need_to_fill[nxt][i]) {
				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() {
	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 155 ms 224068 KB Output is correct
2 Correct 156 ms 224132 KB Output is correct
3 Correct 153 ms 224132 KB Output is correct
4 Correct 157 ms 224132 KB Output is correct
5 Correct 156 ms 224072 KB Output is correct
6 Correct 154 ms 224116 KB Output is correct
7 Correct 156 ms 224092 KB Output is correct
8 Correct 155 ms 224068 KB Output is correct
9 Correct 156 ms 224144 KB Output is correct
10 Correct 155 ms 224204 KB Output is correct
11 Correct 156 ms 224076 KB Output is correct
12 Correct 157 ms 224068 KB Output is correct
13 Correct 158 ms 224100 KB Output is correct
14 Correct 155 ms 223952 KB Output is correct
15 Correct 152 ms 224064 KB Output is correct
16 Correct 154 ms 224168 KB Output is correct
17 Correct 153 ms 224196 KB Output is correct
18 Correct 157 ms 224092 KB Output is correct
19 Correct 155 ms 224068 KB Output is correct
20 Correct 153 ms 224096 KB Output is correct
21 Correct 157 ms 224116 KB Output is correct
22 Correct 157 ms 224080 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 155 ms 224068 KB Output is correct
2 Correct 156 ms 224132 KB Output is correct
3 Correct 153 ms 224132 KB Output is correct
4 Correct 157 ms 224132 KB Output is correct
5 Correct 156 ms 224072 KB Output is correct
6 Correct 154 ms 224116 KB Output is correct
7 Correct 156 ms 224092 KB Output is correct
8 Correct 155 ms 224068 KB Output is correct
9 Correct 156 ms 224144 KB Output is correct
10 Correct 155 ms 224204 KB Output is correct
11 Correct 156 ms 224076 KB Output is correct
12 Correct 157 ms 224068 KB Output is correct
13 Correct 158 ms 224100 KB Output is correct
14 Correct 155 ms 223952 KB Output is correct
15 Correct 152 ms 224064 KB Output is correct
16 Correct 154 ms 224168 KB Output is correct
17 Correct 153 ms 224196 KB Output is correct
18 Correct 157 ms 224092 KB Output is correct
19 Correct 155 ms 224068 KB Output is correct
20 Correct 153 ms 224096 KB Output is correct
21 Correct 157 ms 224116 KB Output is correct
22 Correct 157 ms 224080 KB Output is correct
23 Correct 155 ms 224804 KB Output is correct
24 Correct 157 ms 224780 KB Output is correct
25 Correct 157 ms 224932 KB Output is correct
26 Correct 157 ms 225008 KB Output is correct
27 Correct 155 ms 224812 KB Output is correct
28 Correct 156 ms 224768 KB Output is correct
29 Correct 157 ms 224868 KB Output is correct
30 Correct 159 ms 224776 KB Output is correct
31 Correct 158 ms 224856 KB Output is correct
32 Correct 162 ms 225284 KB Output is correct
33 Correct 159 ms 225156 KB Output is correct
34 Correct 158 ms 224984 KB Output is correct
35 Correct 157 ms 225020 KB Output is correct
36 Correct 159 ms 224260 KB Output is correct
37 Correct 158 ms 224136 KB Output is correct
38 Correct 162 ms 225636 KB Output is correct
39 Correct 154 ms 224596 KB Output is correct
40 Correct 162 ms 225092 KB Output is correct
41 Correct 156 ms 224576 KB Output is correct
42 Correct 155 ms 224536 KB Output is correct
43 Correct 159 ms 225092 KB Output is correct
44 Correct 159 ms 224520 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 155 ms 224068 KB Output is correct
2 Correct 156 ms 224132 KB Output is correct
3 Correct 153 ms 224132 KB Output is correct
4 Correct 157 ms 224132 KB Output is correct
5 Correct 156 ms 224072 KB Output is correct
6 Correct 154 ms 224116 KB Output is correct
7 Correct 156 ms 224092 KB Output is correct
8 Correct 155 ms 224068 KB Output is correct
9 Correct 156 ms 224144 KB Output is correct
10 Correct 155 ms 224204 KB Output is correct
11 Correct 156 ms 224076 KB Output is correct
12 Correct 157 ms 224068 KB Output is correct
13 Correct 158 ms 224100 KB Output is correct
14 Correct 155 ms 223952 KB Output is correct
15 Correct 152 ms 224064 KB Output is correct
16 Correct 154 ms 224168 KB Output is correct
17 Correct 153 ms 224196 KB Output is correct
18 Correct 157 ms 224092 KB Output is correct
19 Correct 155 ms 224068 KB Output is correct
20 Correct 153 ms 224096 KB Output is correct
21 Correct 157 ms 224116 KB Output is correct
22 Correct 157 ms 224080 KB Output is correct
23 Correct 155 ms 224804 KB Output is correct
24 Correct 157 ms 224780 KB Output is correct
25 Correct 157 ms 224932 KB Output is correct
26 Correct 157 ms 225008 KB Output is correct
27 Correct 155 ms 224812 KB Output is correct
28 Correct 156 ms 224768 KB Output is correct
29 Correct 157 ms 224868 KB Output is correct
30 Correct 159 ms 224776 KB Output is correct
31 Correct 158 ms 224856 KB Output is correct
32 Correct 162 ms 225284 KB Output is correct
33 Correct 159 ms 225156 KB Output is correct
34 Correct 158 ms 224984 KB Output is correct
35 Correct 157 ms 225020 KB Output is correct
36 Correct 159 ms 224260 KB Output is correct
37 Correct 158 ms 224136 KB Output is correct
38 Correct 162 ms 225636 KB Output is correct
39 Correct 154 ms 224596 KB Output is correct
40 Correct 162 ms 225092 KB Output is correct
41 Correct 156 ms 224576 KB Output is correct
42 Correct 155 ms 224536 KB Output is correct
43 Correct 159 ms 225092 KB Output is correct
44 Correct 159 ms 224520 KB Output is correct
45 Correct 1014 ms 311352 KB Output is correct
46 Correct 1033 ms 310400 KB Output is correct
47 Correct 1036 ms 309052 KB Output is correct
48 Correct 1018 ms 311644 KB Output is correct
49 Correct 963 ms 308512 KB Output is correct
50 Correct 991 ms 308676 KB Output is correct
51 Correct 1002 ms 308976 KB Output is correct
52 Correct 980 ms 310544 KB Output is correct
53 Correct 982 ms 310736 KB Output is correct
54 Correct 1150 ms 382592 KB Output is correct
55 Correct 1051 ms 357556 KB Output is correct
56 Correct 974 ms 345300 KB Output is correct
57 Correct 923 ms 337004 KB Output is correct
58 Correct 328 ms 236228 KB Output is correct
59 Correct 330 ms 236228 KB Output is correct
60 Correct 1181 ms 431196 KB Output is correct
61 Correct 518 ms 286164 KB Output is correct
62 Correct 1002 ms 366700 KB Output is correct
63 Correct 463 ms 272940 KB Output is correct
64 Correct 510 ms 283844 KB Output is correct
65 Correct 1012 ms 368748 KB Output is correct
66 Correct 463 ms 272452 KB Output is correct