oj.uz

답안 #632496

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
632496 2022-08-20T07:50:28 Z shmad Mountains (NOI20_mountains) C++17
100 / 100
 731 ms 77276 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvt = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, B = 500;
const ll inf = 1e18 + 7, LIM = (1ll << 60);
const double eps = 1e-6;

int n;
map<int, int> m;
set<int> st;
int h[N];
ll t[4 * N];

void upd (int pos, int v = 1, int tl = 1, int tr = 	N) {
	if (tl == tr) {                                
		t[v]++;         
		return;
	}
	int tm = tl + tr >> 1;
	if (pos <= tm) upd(pos, v << 1, tl, tm);
	else upd(pos, v << 1 | 1, tm + 1, tr);
	t[v] = t[v << 1] + t[v << 1 | 1];
}

ll get (int l, int r, int v = 1, int tl = 1, int tr = N) {
	if (tl > r || tr < l) return 0ll;
	if (tl >= l && tr <= r) return t[v];
	int tm = tl + tr >> 1;
	ll a = get(l, r, v << 1, tl, tm);
	ll b = get(l, r, v << 1 | 1, tm + 1, tr);
	return (a + b);
}

ll l[N], r[N];

void solve () {
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> h[i], st.insert(h[i]);
	for (int i: st) m[i] = sz(m) + 1;
	for (int i = 1; i <= n; i++) h[i] = m[h[i]];
	for (int i = 1; i <= n; i++) l[i] = get(1, h[i] - 1), upd(h[i]);
	fill(t, t + 4 * N, 0);
	for (int i = n; i >= 1; i--) r[i] = get(1, h[i] - 1), upd(h[i]);
	ll ans = 0;
	for (int i = 1; i <= n; i++) ans += (l[i] * 1ll * r[i]);
	cout << ans;
	cout << '\n';
}

bool testcases = 0;

signed main() {
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

Compilation message

Mountains.cpp: In function 'void upd(long long int, long long int, long long int, long long int)':
Mountains.cpp:36:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |  int tm = tl + tr >> 1;
      |           ~~~^~~~
Mountains.cpp: In function 'll get(long long int, long long int, long long int, long long int, long long int)':
Mountains.cpp:45:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   45 |  int tm = tl + tr >> 1;
      |           ~~~^~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 31552 KB Output is correct
2 Correct 317 ms 71784 KB Output is correct
3 Correct 310 ms 71812 KB Output is correct
4 Correct 317 ms 71812 KB Output is correct
5 Correct 313 ms 71804 KB Output is correct
6 Correct 317 ms 71720 KB Output is correct
7 Correct 320 ms 71764 KB Output is correct
8 Correct 314 ms 71756 KB Output is correct
9 Correct 254 ms 56008 KB Output is correct
10 Correct 252 ms 56044 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 38656 KB Output is correct
2 Correct 92 ms 38616 KB Output is correct
3 Correct 90 ms 38680 KB Output is correct
4 Correct 92 ms 38648 KB Output is correct
5 Correct 89 ms 38604 KB Output is correct
6 Correct 89 ms 38676 KB Output is correct
7 Correct 89 ms 38664 KB Output is correct
8 Correct 91 ms 38644 KB Output is correct
9 Correct 83 ms 38636 KB Output is correct
10 Correct 13 ms 31600 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 38656 KB Output is correct
2 Correct 92 ms 38616 KB Output is correct
3 Correct 90 ms 38680 KB Output is correct
4 Correct 92 ms 38648 KB Output is correct
5 Correct 89 ms 38604 KB Output is correct
6 Correct 89 ms 38676 KB Output is correct
7 Correct 89 ms 38664 KB Output is correct
8 Correct 91 ms 38644 KB Output is correct
9 Correct 83 ms 38636 KB Output is correct
10 Correct 13 ms 31600 KB Output is correct
11 Correct 157 ms 38580 KB Output is correct
12 Correct 156 ms 38640 KB Output is correct
13 Correct 155 ms 38628 KB Output is correct
14 Correct 152 ms 38604 KB Output is correct
15 Correct 151 ms 38636 KB Output is correct
16 Correct 155 ms 38688 KB Output is correct
17 Correct 151 ms 38600 KB Output is correct
18 Correct 102 ms 38716 KB Output is correct
19 Correct 107 ms 38604 KB Output is correct
20 Correct 13 ms 31552 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 31628 KB Output is correct
2 Correct 13 ms 31728 KB Output is correct
3 Correct 13 ms 31700 KB Output is correct
4 Correct 13 ms 31700 KB Output is correct
5 Correct 15 ms 31704 KB Output is correct
6 Correct 13 ms 31628 KB Output is correct
7 Correct 13 ms 31700 KB Output is correct
8 Correct 14 ms 31700 KB Output is correct
9 Correct 14 ms 31688 KB Output is correct
10 Correct 13 ms 31556 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 31628 KB Output is correct
2 Correct 13 ms 31728 KB Output is correct
3 Correct 13 ms 31700 KB Output is correct
4 Correct 13 ms 31700 KB Output is correct
5 Correct 15 ms 31704 KB Output is correct
6 Correct 13 ms 31628 KB Output is correct
7 Correct 13 ms 31700 KB Output is correct
8 Correct 14 ms 31700 KB Output is correct
9 Correct 14 ms 31688 KB Output is correct
10 Correct 13 ms 31556 KB Output is correct
11 Correct 24 ms 33100 KB Output is correct
12 Correct 24 ms 33080 KB Output is correct
13 Correct 23 ms 33096 KB Output is correct
14 Correct 24 ms 33080 KB Output is correct
15 Correct 23 ms 33028 KB Output is correct
16 Correct 24 ms 33060 KB Output is correct
17 Correct 24 ms 33108 KB Output is correct
18 Correct 22 ms 32532 KB Output is correct
19 Correct 18 ms 31948 KB Output is correct
20 Correct 12 ms 31596 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 38656 KB Output is correct
2 Correct 92 ms 38616 KB Output is correct
3 Correct 90 ms 38680 KB Output is correct
4 Correct 92 ms 38648 KB Output is correct
5 Correct 89 ms 38604 KB Output is correct
6 Correct 89 ms 38676 KB Output is correct
7 Correct 89 ms 38664 KB Output is correct
8 Correct 91 ms 38644 KB Output is correct
9 Correct 83 ms 38636 KB Output is correct
10 Correct 13 ms 31600 KB Output is correct
11 Correct 157 ms 38580 KB Output is correct
12 Correct 156 ms 38640 KB Output is correct
13 Correct 155 ms 38628 KB Output is correct
14 Correct 152 ms 38604 KB Output is correct
15 Correct 151 ms 38636 KB Output is correct
16 Correct 155 ms 38688 KB Output is correct
17 Correct 151 ms 38600 KB Output is correct
18 Correct 102 ms 38716 KB Output is correct
19 Correct 107 ms 38604 KB Output is correct
20 Correct 13 ms 31552 KB Output is correct
21 Correct 377 ms 49272 KB Output is correct
22 Correct 396 ms 49004 KB Output is correct
23 Correct 368 ms 49040 KB Output is correct
24 Correct 372 ms 49108 KB Output is correct
25 Correct 375 ms 49048 KB Output is correct
26 Correct 379 ms 48972 KB Output is correct
27 Correct 377 ms 49100 KB Output is correct
28 Correct 197 ms 49040 KB Output is correct
29 Correct 195 ms 48972 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 12 ms 31552 KB Output is correct
2 Correct 317 ms 71784 KB Output is correct
3 Correct 310 ms 71812 KB Output is correct
4 Correct 317 ms 71812 KB Output is correct
5 Correct 313 ms 71804 KB Output is correct
6 Correct 317 ms 71720 KB Output is correct
7 Correct 320 ms 71764 KB Output is correct
8 Correct 314 ms 71756 KB Output is correct
9 Correct 254 ms 56008 KB Output is correct
10 Correct 252 ms 56044 KB Output is correct
11 Correct 89 ms 38656 KB Output is correct
12 Correct 92 ms 38616 KB Output is correct
13 Correct 90 ms 38680 KB Output is correct
14 Correct 92 ms 38648 KB Output is correct
15 Correct 89 ms 38604 KB Output is correct
16 Correct 89 ms 38676 KB Output is correct
17 Correct 89 ms 38664 KB Output is correct
18 Correct 91 ms 38644 KB Output is correct
19 Correct 83 ms 38636 KB Output is correct
20 Correct 13 ms 31600 KB Output is correct
21 Correct 157 ms 38580 KB Output is correct
22 Correct 156 ms 38640 KB Output is correct
23 Correct 155 ms 38628 KB Output is correct
24 Correct 152 ms 38604 KB Output is correct
25 Correct 151 ms 38636 KB Output is correct
26 Correct 155 ms 38688 KB Output is correct
27 Correct 151 ms 38600 KB Output is correct
28 Correct 102 ms 38716 KB Output is correct
29 Correct 107 ms 38604 KB Output is correct
30 Correct 13 ms 31552 KB Output is correct
31 Correct 13 ms 31628 KB Output is correct
32 Correct 13 ms 31728 KB Output is correct
33 Correct 13 ms 31700 KB Output is correct
34 Correct 13 ms 31700 KB Output is correct
35 Correct 15 ms 31704 KB Output is correct
36 Correct 13 ms 31628 KB Output is correct
37 Correct 13 ms 31700 KB Output is correct
38 Correct 14 ms 31700 KB Output is correct
39 Correct 14 ms 31688 KB Output is correct
40 Correct 13 ms 31556 KB Output is correct
41 Correct 24 ms 33100 KB Output is correct
42 Correct 24 ms 33080 KB Output is correct
43 Correct 23 ms 33096 KB Output is correct
44 Correct 24 ms 33080 KB Output is correct
45 Correct 23 ms 33028 KB Output is correct
46 Correct 24 ms 33060 KB Output is correct
47 Correct 24 ms 33108 KB Output is correct
48 Correct 22 ms 32532 KB Output is correct
49 Correct 18 ms 31948 KB Output is correct
50 Correct 12 ms 31596 KB Output is correct
51 Correct 377 ms 49272 KB Output is correct
52 Correct 396 ms 49004 KB Output is correct
53 Correct 368 ms 49040 KB Output is correct
54 Correct 372 ms 49108 KB Output is correct
55 Correct 375 ms 49048 KB Output is correct
56 Correct 379 ms 48972 KB Output is correct
57 Correct 377 ms 49100 KB Output is correct
58 Correct 197 ms 49040 KB Output is correct
59 Correct 195 ms 48972 KB Output is correct
60 Correct 12 ms 31572 KB Output is correct
61 Correct 724 ms 77276 KB Output is correct
62 Correct 728 ms 77176 KB Output is correct
63 Correct 731 ms 77112 KB Output is correct
64 Correct 701 ms 77132 KB Output is correct
65 Correct 710 ms 77232 KB Output is correct
66 Correct 699 ms 77096 KB Output is correct
67 Correct 718 ms 77108 KB Output is correct
68 Correct 555 ms 61256 KB Output is correct
69 Correct 462 ms 54708 KB Output is correct
70 Correct 14 ms 31572 KB Output is correct