답안 #219770

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
219770	2020-04-06T10:15:37 Z	patrikpavic2	Construction of Highway (JOI18_construction)	C++17	100 / 100	826 ms	24176 KB

construction

#include <cstdio>
#include <vector>
#include <algorithm>

#define X first
#define Y second
#define PB push_back

using namespace std;

typedef long long ll;
typedef pair < int, int > pii;

const int N = 1e5 + 500;
const int LOG = 17;
const int OFF = (1 << LOG);

ll inv, ans[N];
vector < int > saz, v[N];
int loga[N], siz = 0, koga[N], C[N], n, cur;
int A[N], B[N], L[N], R[N];
int vrh[N], dep[N], dno[N], par[N][LOG], lan[N];

void add(int x, int y){
	siz += y;
	for(; x < N ; x += x & -x)
		loga[x] += y;
}

int query(int x){
	int ret = 0;
	for(; x ; x -= x & -x)
		ret += loga[x];
	return ret;
}


void dfs(int x,int lst){
	par[x][0] = lst; dep[x] = dep[lst] + 1;
	L[x] = cur++;
	for(int y : v[x])
		dfs(y, x);
	R[x] = cur - 1;
}

void precompute(){
	for(int j = 1;j < LOG;j++)
		for(int i = 1;i <= n;i++)
			par[i][j] = par[par[i][j - 1]][j - 1];
}

int digni(int x,int k){
	for(int i = LOG - 1;i >= 0;i--)
		if(k & (1 << i)) x = par[x][i];
	return x;
}

int tour[2 * OFF];

void update(int i,int x){
	tour[i + OFF] = x;
	for(i = (i + OFF) / 2; i ; i /= 2)
		tour[i] = max(tour[2 * i], tour[2 * i + 1]);
}

int query(int i,int a,int b,int lo,int hi){
	if(lo <= a && b <= hi) return tour[i];
	if(a > hi || b < lo) return 0;
	return max(query(2 * i, a, (a + b) / 2, lo, hi), query(2 * i + 1, (a + b) / 2 + 1, b, lo, hi));
}

int gdje(int i){
	return query(1, 0, OFF - 1, L[i], R[i]);
}

ll odradi(int st){
	int x = gdje(st);
	ll inv = 0;
	vector < pii > brisi;
	for(;;){
		inv += (ll)query(C[dno[x]] - 1) * (dep[st] - dep[vrh[x]] + 1);
		add(C[dno[x]], dep[st] - dep[vrh[x]] + 1);
		brisi.PB({C[dno[x]], dep[st] - dep[vrh[x]] + 1});
		int ol_vrh = vrh[x];
		if(st != dno[x]){
			vrh[x] = digni(dno[x], dep[dno[x]] - dep[st] - 1);
		}
		if(!(ol_vrh - 1)) break;
		st = par[ol_vrh][0];
		x = gdje(st);
	}
	for(pii tmp : brisi)
		add(tmp.X, -tmp.Y);
	return inv;
}

int main(){
	scanf("%d", &n);
	for(int i = 1;i <= n;i++){
		scanf("%d", C + i), saz.PB(C[i]);
	}
	sort(saz.begin(), saz.end());
	for(int i = 1;i <= n;i++)
		C[i] = lower_bound(saz.begin(), saz.end(), C[i]) - saz.begin() + 1;
	for(int i = 1;i < n;i++){
		scanf("%d%d", A + i, B + i);
		v[A[i]].PB(B[i]);
	}
	dfs(1, 1); precompute();
	vrh[0] = 1, dno[0] = 1;
	for(int i = 1;i < n;i++){
		printf("%lld\n", odradi(A[i]));
		dno[i] = B[i], vrh[i] = 1;
		update(L[B[i]], i);
	}
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:98:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
construction.cpp:100:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", C + i), saz.PB(C[i]);
   ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
construction.cpp:106:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", A + i, B + i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	2816 KB	Output is correct
2	Correct	6 ms	2816 KB	Output is correct
3	Correct	6 ms	2816 KB	Output is correct
4	Correct	7 ms	2816 KB	Output is correct
5	Correct	7 ms	2944 KB	Output is correct
6	Correct	7 ms	2944 KB	Output is correct
7	Correct	7 ms	2816 KB	Output is correct
8	Correct	6 ms	2944 KB	Output is correct
9	Correct	7 ms	2944 KB	Output is correct
10	Correct	6 ms	2816 KB	Output is correct
11	Correct	6 ms	2816 KB	Output is correct
12	Correct	6 ms	2816 KB	Output is correct
13	Correct	7 ms	2816 KB	Output is correct
14	Correct	7 ms	2944 KB	Output is correct
15	Correct	7 ms	2816 KB	Output is correct
16	Correct	7 ms	2944 KB	Output is correct
17	Correct	7 ms	2816 KB	Output is correct
18	Correct	7 ms	2816 KB	Output is correct
19	Correct	7 ms	2816 KB	Output is correct
20	Correct	7 ms	2816 KB	Output is correct
21	Correct	7 ms	2816 KB	Output is correct
22	Correct	7 ms	2816 KB	Output is correct
23	Correct	7 ms	2816 KB	Output is correct
24	Correct	7 ms	2816 KB	Output is correct
25	Correct	7 ms	2816 KB	Output is correct
26	Correct	6 ms	2816 KB	Output is correct
27	Correct	6 ms	2816 KB	Output is correct
28	Correct	7 ms	2944 KB	Output is correct
29	Correct	6 ms	2816 KB	Output is correct
30	Correct	9 ms	2944 KB	Output is correct
31	Correct	7 ms	2944 KB	Output is correct
32	Correct	6 ms	2816 KB	Output is correct
33	Correct	6 ms	2816 KB	Output is correct
34	Correct	6 ms	2816 KB	Output is correct
35	Correct	6 ms	2816 KB	Output is correct
36	Correct	6 ms	2816 KB	Output is correct
37	Correct	6 ms	2816 KB	Output is correct
38	Correct	6 ms	2816 KB	Output is correct
39	Correct	6 ms	2816 KB	Output is correct
40	Correct	7 ms	2816 KB	Output is correct
41	Correct	7 ms	2816 KB	Output is correct
42	Correct	6 ms	2816 KB	Output is correct
43	Correct	7 ms	2816 KB	Output is correct
44	Correct	7 ms	2816 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	2816 KB	Output is correct
2	Correct	6 ms	2816 KB	Output is correct
3	Correct	6 ms	2816 KB	Output is correct
4	Correct	7 ms	2816 KB	Output is correct
5	Correct	7 ms	2944 KB	Output is correct
6	Correct	7 ms	2944 KB	Output is correct
7	Correct	7 ms	2816 KB	Output is correct
8	Correct	6 ms	2944 KB	Output is correct
9	Correct	7 ms	2944 KB	Output is correct
10	Correct	6 ms	2816 KB	Output is correct
11	Correct	6 ms	2816 KB	Output is correct
12	Correct	6 ms	2816 KB	Output is correct
13	Correct	7 ms	2816 KB	Output is correct
14	Correct	7 ms	2944 KB	Output is correct
15	Correct	7 ms	2816 KB	Output is correct
16	Correct	7 ms	2944 KB	Output is correct
17	Correct	7 ms	2816 KB	Output is correct
18	Correct	7 ms	2816 KB	Output is correct
19	Correct	7 ms	2816 KB	Output is correct
20	Correct	7 ms	2816 KB	Output is correct
21	Correct	7 ms	2816 KB	Output is correct
22	Correct	7 ms	2816 KB	Output is correct
23	Correct	7 ms	2816 KB	Output is correct
24	Correct	7 ms	2816 KB	Output is correct
25	Correct	7 ms	2816 KB	Output is correct
26	Correct	6 ms	2816 KB	Output is correct
27	Correct	6 ms	2816 KB	Output is correct
28	Correct	7 ms	2944 KB	Output is correct
29	Correct	6 ms	2816 KB	Output is correct
30	Correct	9 ms	2944 KB	Output is correct
31	Correct	7 ms	2944 KB	Output is correct
32	Correct	6 ms	2816 KB	Output is correct
33	Correct	6 ms	2816 KB	Output is correct
34	Correct	6 ms	2816 KB	Output is correct
35	Correct	6 ms	2816 KB	Output is correct
36	Correct	6 ms	2816 KB	Output is correct
37	Correct	6 ms	2816 KB	Output is correct
38	Correct	6 ms	2816 KB	Output is correct
39	Correct	6 ms	2816 KB	Output is correct
40	Correct	7 ms	2816 KB	Output is correct
41	Correct	7 ms	2816 KB	Output is correct
42	Correct	6 ms	2816 KB	Output is correct
43	Correct	7 ms	2816 KB	Output is correct
44	Correct	7 ms	2816 KB	Output is correct
45	Correct	8 ms	2944 KB	Output is correct
46	Correct	16 ms	3456 KB	Output is correct
47	Correct	16 ms	3328 KB	Output is correct
48	Correct	16 ms	3328 KB	Output is correct
49	Correct	11 ms	3584 KB	Output is correct
50	Correct	11 ms	3584 KB	Output is correct
51	Correct	11 ms	3584 KB	Output is correct
52	Correct	11 ms	3456 KB	Output is correct
53	Correct	14 ms	3668 KB	Output is correct
54	Correct	11 ms	3456 KB	Output is correct
55	Correct	11 ms	3456 KB	Output is correct
56	Correct	12 ms	3584 KB	Output is correct
57	Correct	23 ms	3328 KB	Output is correct
58	Correct	24 ms	3328 KB	Output is correct
59	Correct	23 ms	3320 KB	Output is correct
60	Correct	23 ms	3328 KB	Output is correct
61	Correct	12 ms	3456 KB	Output is correct
62	Correct	12 ms	3456 KB	Output is correct
63	Correct	13 ms	3668 KB	Output is correct
64	Correct	14 ms	3328 KB	Output is correct
65	Correct	15 ms	3376 KB	Output is correct
66	Correct	16 ms	3328 KB	Output is correct
67	Correct	16 ms	3328 KB	Output is correct
68	Correct	10 ms	3584 KB	Output is correct
69	Correct	12 ms	3456 KB	Output is correct
70	Correct	11 ms	3456 KB	Output is correct
71	Correct	11 ms	3456 KB	Output is correct
72	Correct	23 ms	3328 KB	Output is correct
73	Correct	23 ms	3328 KB	Output is correct
74	Correct	12 ms	3456 KB	Output is correct
75	Correct	12 ms	3456 KB	Output is correct
76	Correct	12 ms	3456 KB	Output is correct
77	Correct	11 ms	3328 KB	Output is correct
78	Correct	11 ms	3328 KB	Output is correct
79	Correct	11 ms	3328 KB	Output is correct
80	Correct	11 ms	3328 KB	Output is correct
81	Correct	12 ms	3456 KB	Output is correct
82	Correct	14 ms	3328 KB	Output is correct
83	Correct	12 ms	3328 KB	Output is correct
84	Correct	12 ms	3456 KB	Output is correct
85	Correct	12 ms	3328 KB	Output is correct
86	Correct	12 ms	3456 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	2816 KB	Output is correct
2	Correct	6 ms	2816 KB	Output is correct
3	Correct	6 ms	2816 KB	Output is correct
4	Correct	7 ms	2816 KB	Output is correct
5	Correct	7 ms	2944 KB	Output is correct
6	Correct	7 ms	2944 KB	Output is correct
7	Correct	7 ms	2816 KB	Output is correct
8	Correct	6 ms	2944 KB	Output is correct
9	Correct	7 ms	2944 KB	Output is correct
10	Correct	6 ms	2816 KB	Output is correct
11	Correct	6 ms	2816 KB	Output is correct
12	Correct	6 ms	2816 KB	Output is correct
13	Correct	7 ms	2816 KB	Output is correct
14	Correct	7 ms	2944 KB	Output is correct
15	Correct	7 ms	2816 KB	Output is correct
16	Correct	7 ms	2944 KB	Output is correct
17	Correct	7 ms	2816 KB	Output is correct
18	Correct	7 ms	2816 KB	Output is correct
19	Correct	7 ms	2816 KB	Output is correct
20	Correct	7 ms	2816 KB	Output is correct
21	Correct	7 ms	2816 KB	Output is correct
22	Correct	7 ms	2816 KB	Output is correct
23	Correct	7 ms	2816 KB	Output is correct
24	Correct	7 ms	2816 KB	Output is correct
25	Correct	7 ms	2816 KB	Output is correct
26	Correct	6 ms	2816 KB	Output is correct
27	Correct	6 ms	2816 KB	Output is correct
28	Correct	7 ms	2944 KB	Output is correct
29	Correct	6 ms	2816 KB	Output is correct
30	Correct	9 ms	2944 KB	Output is correct
31	Correct	7 ms	2944 KB	Output is correct
32	Correct	6 ms	2816 KB	Output is correct
33	Correct	6 ms	2816 KB	Output is correct
34	Correct	6 ms	2816 KB	Output is correct
35	Correct	6 ms	2816 KB	Output is correct
36	Correct	6 ms	2816 KB	Output is correct
37	Correct	6 ms	2816 KB	Output is correct
38	Correct	6 ms	2816 KB	Output is correct
39	Correct	6 ms	2816 KB	Output is correct
40	Correct	7 ms	2816 KB	Output is correct
41	Correct	7 ms	2816 KB	Output is correct
42	Correct	6 ms	2816 KB	Output is correct
43	Correct	7 ms	2816 KB	Output is correct
44	Correct	7 ms	2816 KB	Output is correct
45	Correct	8 ms	2944 KB	Output is correct
46	Correct	16 ms	3456 KB	Output is correct
47	Correct	16 ms	3328 KB	Output is correct
48	Correct	16 ms	3328 KB	Output is correct
49	Correct	11 ms	3584 KB	Output is correct
50	Correct	11 ms	3584 KB	Output is correct
51	Correct	11 ms	3584 KB	Output is correct
52	Correct	11 ms	3456 KB	Output is correct
53	Correct	14 ms	3668 KB	Output is correct
54	Correct	11 ms	3456 KB	Output is correct
55	Correct	11 ms	3456 KB	Output is correct
56	Correct	12 ms	3584 KB	Output is correct
57	Correct	23 ms	3328 KB	Output is correct
58	Correct	24 ms	3328 KB	Output is correct
59	Correct	23 ms	3320 KB	Output is correct
60	Correct	23 ms	3328 KB	Output is correct
61	Correct	12 ms	3456 KB	Output is correct
62	Correct	12 ms	3456 KB	Output is correct
63	Correct	13 ms	3668 KB	Output is correct
64	Correct	14 ms	3328 KB	Output is correct
65	Correct	15 ms	3376 KB	Output is correct
66	Correct	16 ms	3328 KB	Output is correct
67	Correct	16 ms	3328 KB	Output is correct
68	Correct	10 ms	3584 KB	Output is correct
69	Correct	12 ms	3456 KB	Output is correct
70	Correct	11 ms	3456 KB	Output is correct
71	Correct	11 ms	3456 KB	Output is correct
72	Correct	23 ms	3328 KB	Output is correct
73	Correct	23 ms	3328 KB	Output is correct
74	Correct	12 ms	3456 KB	Output is correct
75	Correct	12 ms	3456 KB	Output is correct
76	Correct	12 ms	3456 KB	Output is correct
77	Correct	11 ms	3328 KB	Output is correct
78	Correct	11 ms	3328 KB	Output is correct
79	Correct	11 ms	3328 KB	Output is correct
80	Correct	11 ms	3328 KB	Output is correct
81	Correct	12 ms	3456 KB	Output is correct
82	Correct	14 ms	3328 KB	Output is correct
83	Correct	12 ms	3328 KB	Output is correct
84	Correct	12 ms	3456 KB	Output is correct
85	Correct	12 ms	3328 KB	Output is correct
86	Correct	12 ms	3456 KB	Output is correct
87	Correct	33 ms	4344 KB	Output is correct
88	Correct	102 ms	7416 KB	Output is correct
89	Correct	416 ms	18288 KB	Output is correct
90	Correct	431 ms	18160 KB	Output is correct
91	Correct	416 ms	18160 KB	Output is correct
92	Correct	163 ms	24176 KB	Output is correct
93	Correct	173 ms	24176 KB	Output is correct
94	Correct	163 ms	24176 KB	Output is correct
95	Correct	184 ms	20720 KB	Output is correct
96	Correct	216 ms	21228 KB	Output is correct
97	Correct	192 ms	21104 KB	Output is correct
98	Correct	197 ms	21104 KB	Output is correct
99	Correct	201 ms	20720 KB	Output is correct
100	Correct	822 ms	18416 KB	Output is correct
101	Correct	826 ms	18672 KB	Output is correct
102	Correct	822 ms	18544 KB	Output is correct
103	Correct	807 ms	18544 KB	Output is correct
104	Correct	239 ms	20464 KB	Output is correct
105	Correct	228 ms	20464 KB	Output is correct
106	Correct	253 ms	20592 KB	Output is correct
107	Correct	398 ms	17008 KB	Output is correct
108	Correct	416 ms	17680 KB	Output is correct
109	Correct	427 ms	17644 KB	Output is correct
110	Correct	159 ms	23660 KB	Output is correct
111	Correct	188 ms	20716 KB	Output is correct
112	Correct	183 ms	20464 KB	Output is correct
113	Correct	180 ms	19824 KB	Output is correct
114	Correct	792 ms	18288 KB	Output is correct
115	Correct	806 ms	18140 KB	Output is correct
116	Correct	229 ms	19952 KB	Output is correct
117	Correct	194 ms	18924 KB	Output is correct
118	Correct	180 ms	18548 KB	Output is correct
119	Correct	183 ms	18552 KB	Output is correct
120	Correct	174 ms	18540 KB	Output is correct
121	Correct	176 ms	18288 KB	Output is correct
122	Correct	186 ms	17992 KB	Output is correct
123	Correct	240 ms	19056 KB	Output is correct
124	Correct	244 ms	18672 KB	Output is correct
125	Correct	254 ms	18640 KB	Output is correct
126	Correct	226 ms	18672 KB	Output is correct
127	Correct	231 ms	18284 KB	Output is correct
128	Correct	234 ms	18156 KB	Output is correct

답안 #219770

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 84.0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
84.0 / 84.0