답안 #540981

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
540981	2022-03-22T05:42:35 Z	l3nl3	Mountains (NOI20_mountains)	C++14	100 / 100	339 ms	46724 KB

Mountains

/*#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")*/

#include <bits/stdc++.h>

#define int long long

using namespace std;

const int N = 1e6;

int n, b[N], p[N], t[N*4], ans;
pair<int, int> a[N];

void clr() {
	for (int i = 1; i < N*4; i++) {
		t[i] = 0;
	}
	return;
}

void upd (int v, int tl, int tr, int p) {
	if (tl == tr) {
		t[v]++;
		return;
	}
	int tm = (tl+tr) / 2;
	if (p <= tm) upd(v+v, tl, tm, p);
	else upd(v+v+1, tm+1, tr, p);
	t[v] = t[v+v] + t[v+v+1];
}

int get (int v, int tl, int tr, int l, int r) {
	if (l <= tl && tr <= r) return t[v];
	if (tr < l || r < tl) return 0;
	int tm = (tl+tr) / 2;
	return get(v+v, tl, tm, l, r) + get(v+v+1, tm+1, tr, l, r);
}

signed main () {
 	//freopen("", "r", stdin);
 	//freopen("", "w", stdout);
 	ios_base::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i].first;
		a[i].second = i;
	}
	sort(a+1, a+n+1);
	int num = 0;
	a[0].first = -100;
	for (int i = 1; i <= n; i++) {
		if (a[i].first > a[i-1].first) num++;
		b[a[i].second] = num;
	}             
	for (int i = 1; i <= n; i++) {
		p[i] = get(1, 1, n, 1, b[i] - 1);
		upd(1, 1, n, b[i]);
	}     
	clr();
	reverse(b+1, b+n+1);
	for (int i = 1; i <= n; i++) {
		int j = n-i+1;
		ans += p[j] * get(1, 1, n, 1, b[i]-1);
		upd(1, 1, n, b[i]);
	}	
	cout << ans;
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	31572 KB	Output is correct
2	Correct	200 ms	40948 KB	Output is correct
3	Correct	231 ms	46680 KB	Output is correct
4	Correct	191 ms	46576 KB	Output is correct
5	Correct	210 ms	46568 KB	Output is correct
6	Correct	200 ms	46592 KB	Output is correct
7	Correct	193 ms	46584 KB	Output is correct
8	Correct	208 ms	46668 KB	Output is correct
9	Correct	201 ms	46628 KB	Output is correct
10	Correct	192 ms	46616 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	41096 KB	Output is correct
2	Correct	151 ms	40988 KB	Output is correct
3	Correct	151 ms	40992 KB	Output is correct
4	Correct	145 ms	40972 KB	Output is correct
5	Correct	144 ms	41064 KB	Output is correct
6	Correct	149 ms	40952 KB	Output is correct
7	Correct	147 ms	40980 KB	Output is correct
8	Correct	133 ms	40984 KB	Output is correct
9	Correct	123 ms	41012 KB	Output is correct
10	Correct	12 ms	31572 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	41096 KB	Output is correct
2	Correct	151 ms	40988 KB	Output is correct
3	Correct	151 ms	40992 KB	Output is correct
4	Correct	145 ms	40972 KB	Output is correct
5	Correct	144 ms	41064 KB	Output is correct
6	Correct	149 ms	40952 KB	Output is correct
7	Correct	147 ms	40980 KB	Output is correct
8	Correct	133 ms	40984 KB	Output is correct
9	Correct	123 ms	41012 KB	Output is correct
10	Correct	12 ms	31572 KB	Output is correct
11	Correct	214 ms	41888 KB	Output is correct
12	Correct	219 ms	41884 KB	Output is correct
13	Correct	198 ms	41780 KB	Output is correct
14	Correct	199 ms	41892 KB	Output is correct
15	Correct	201 ms	41884 KB	Output is correct
16	Correct	190 ms	41888 KB	Output is correct
17	Correct	202 ms	41892 KB	Output is correct
18	Correct	137 ms	41836 KB	Output is correct
19	Correct	134 ms	41804 KB	Output is correct
20	Correct	12 ms	31572 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	31624 KB	Output is correct
2	Correct	13 ms	31572 KB	Output is correct
3	Correct	11 ms	31572 KB	Output is correct
4	Correct	14 ms	31572 KB	Output is correct
5	Correct	17 ms	31668 KB	Output is correct
6	Correct	13 ms	31596 KB	Output is correct
7	Correct	13 ms	31608 KB	Output is correct
8	Correct	13 ms	31572 KB	Output is correct
9	Correct	12 ms	31572 KB	Output is correct
10	Correct	13 ms	31572 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	31624 KB	Output is correct
2	Correct	13 ms	31572 KB	Output is correct
3	Correct	11 ms	31572 KB	Output is correct
4	Correct	14 ms	31572 KB	Output is correct
5	Correct	17 ms	31668 KB	Output is correct
6	Correct	13 ms	31596 KB	Output is correct
7	Correct	13 ms	31608 KB	Output is correct
8	Correct	13 ms	31572 KB	Output is correct
9	Correct	12 ms	31572 KB	Output is correct
10	Correct	13 ms	31572 KB	Output is correct
11	Correct	20 ms	31888 KB	Output is correct
12	Correct	26 ms	31952 KB	Output is correct
13	Correct	22 ms	31956 KB	Output is correct
14	Correct	21 ms	31956 KB	Output is correct
15	Correct	21 ms	31956 KB	Output is correct
16	Correct	20 ms	31888 KB	Output is correct
17	Correct	22 ms	31864 KB	Output is correct
18	Correct	21 ms	31956 KB	Output is correct
19	Correct	18 ms	31956 KB	Output is correct
20	Correct	12 ms	31576 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	150 ms	41096 KB	Output is correct
2	Correct	151 ms	40988 KB	Output is correct
3	Correct	151 ms	40992 KB	Output is correct
4	Correct	145 ms	40972 KB	Output is correct
5	Correct	144 ms	41064 KB	Output is correct
6	Correct	149 ms	40952 KB	Output is correct
7	Correct	147 ms	40980 KB	Output is correct
8	Correct	133 ms	40984 KB	Output is correct
9	Correct	123 ms	41012 KB	Output is correct
10	Correct	12 ms	31572 KB	Output is correct
11	Correct	214 ms	41888 KB	Output is correct
12	Correct	219 ms	41884 KB	Output is correct
13	Correct	198 ms	41780 KB	Output is correct
14	Correct	199 ms	41892 KB	Output is correct
15	Correct	201 ms	41884 KB	Output is correct
16	Correct	190 ms	41888 KB	Output is correct
17	Correct	202 ms	41892 KB	Output is correct
18	Correct	137 ms	41836 KB	Output is correct
19	Correct	134 ms	41804 KB	Output is correct
20	Correct	12 ms	31572 KB	Output is correct
21	Correct	310 ms	42760 KB	Output is correct
22	Correct	264 ms	42760 KB	Output is correct
23	Correct	261 ms	42760 KB	Output is correct
24	Correct	281 ms	42760 KB	Output is correct
25	Correct	271 ms	42840 KB	Output is correct
26	Correct	263 ms	42700 KB	Output is correct
27	Correct	256 ms	42700 KB	Output is correct
28	Correct	162 ms	42796 KB	Output is correct
29	Correct	156 ms	42760 KB	Output is correct
30	Correct	12 ms	31572 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	31572 KB	Output is correct
2	Correct	200 ms	40948 KB	Output is correct
3	Correct	231 ms	46680 KB	Output is correct
4	Correct	191 ms	46576 KB	Output is correct
5	Correct	210 ms	46568 KB	Output is correct
6	Correct	200 ms	46592 KB	Output is correct
7	Correct	193 ms	46584 KB	Output is correct
8	Correct	208 ms	46668 KB	Output is correct
9	Correct	201 ms	46628 KB	Output is correct
10	Correct	192 ms	46616 KB	Output is correct
11	Correct	150 ms	41096 KB	Output is correct
12	Correct	151 ms	40988 KB	Output is correct
13	Correct	151 ms	40992 KB	Output is correct
14	Correct	145 ms	40972 KB	Output is correct
15	Correct	144 ms	41064 KB	Output is correct
16	Correct	149 ms	40952 KB	Output is correct
17	Correct	147 ms	40980 KB	Output is correct
18	Correct	133 ms	40984 KB	Output is correct
19	Correct	123 ms	41012 KB	Output is correct
20	Correct	12 ms	31572 KB	Output is correct
21	Correct	214 ms	41888 KB	Output is correct
22	Correct	219 ms	41884 KB	Output is correct
23	Correct	198 ms	41780 KB	Output is correct
24	Correct	199 ms	41892 KB	Output is correct
25	Correct	201 ms	41884 KB	Output is correct
26	Correct	190 ms	41888 KB	Output is correct
27	Correct	202 ms	41892 KB	Output is correct
28	Correct	137 ms	41836 KB	Output is correct
29	Correct	134 ms	41804 KB	Output is correct
30	Correct	12 ms	31572 KB	Output is correct
31	Correct	12 ms	31624 KB	Output is correct
32	Correct	13 ms	31572 KB	Output is correct
33	Correct	11 ms	31572 KB	Output is correct
34	Correct	14 ms	31572 KB	Output is correct
35	Correct	17 ms	31668 KB	Output is correct
36	Correct	13 ms	31596 KB	Output is correct
37	Correct	13 ms	31608 KB	Output is correct
38	Correct	13 ms	31572 KB	Output is correct
39	Correct	12 ms	31572 KB	Output is correct
40	Correct	13 ms	31572 KB	Output is correct
41	Correct	20 ms	31888 KB	Output is correct
42	Correct	26 ms	31952 KB	Output is correct
43	Correct	22 ms	31956 KB	Output is correct
44	Correct	21 ms	31956 KB	Output is correct
45	Correct	21 ms	31956 KB	Output is correct
46	Correct	20 ms	31888 KB	Output is correct
47	Correct	22 ms	31864 KB	Output is correct
48	Correct	21 ms	31956 KB	Output is correct
49	Correct	18 ms	31956 KB	Output is correct
50	Correct	12 ms	31576 KB	Output is correct
51	Correct	310 ms	42760 KB	Output is correct
52	Correct	264 ms	42760 KB	Output is correct
53	Correct	261 ms	42760 KB	Output is correct
54	Correct	281 ms	42760 KB	Output is correct
55	Correct	271 ms	42840 KB	Output is correct
56	Correct	263 ms	42700 KB	Output is correct
57	Correct	256 ms	42700 KB	Output is correct
58	Correct	162 ms	42796 KB	Output is correct
59	Correct	156 ms	42760 KB	Output is correct
60	Correct	12 ms	31572 KB	Output is correct
61	Correct	323 ms	46724 KB	Output is correct
62	Correct	324 ms	46548 KB	Output is correct
63	Correct	322 ms	46624 KB	Output is correct
64	Correct	310 ms	46632 KB	Output is correct
65	Correct	319 ms	46584 KB	Output is correct
66	Correct	338 ms	46620 KB	Output is correct
67	Correct	339 ms	46580 KB	Output is correct
68	Correct	312 ms	46688 KB	Output is correct
69	Correct	269 ms	42816 KB	Output is correct
70	Correct	12 ms	31572 KB	Output is correct

답안 #540981

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0