답안 #680895

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
680895	2023-01-12T01:34:47 Z	DennisTran	Mountains (NOI20_mountains)	C++17	100 / 100	161 ms	14340 KB

Mountains

#pragma GCC optimize("O2")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FOD(i, a, b) for (int i = (a); i >= (b); i--)
#define REP(i, n) for (int i = 0; i < (n); i++)
#define ALL(x) (x).begin(), (x).end()
#define TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }

using namespace std;

const int MAXN = 3e5 + 5;

int N, L[MAXN], R[MAXN];
vector <long long> nen;
long long a[MAXN];

struct BIT{
    int bit[MAXN];
    void upd(int x, int val) {for (; x <= N; x += x &-x) bit[x] += val;}
    int get(int x) {
        int ans = 0;
        for (; x; x -= x&-x) ans += bit[x];
        return ans;
    }
} mybit;

void calc(int *val) {
    FOR(i, 1, N) {
        val[i] = mybit.get(a[i] - 1);
        mybit.upd(a[i], 1);
    }
    FOR(i, 1, N) {
        mybit.upd(a[i], -1);
    }
}

signed main(void) {
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    //file("TASK");
    cin >> N;
    FOR(i, 1, N) cin >> a[i], nen.emplace_back(a[i]);
    sort(ALL(nen)); nen.erase(unique(ALL(nen)), nen.end());
    FOR(i, 1, N) a[i] = lower_bound(ALL(nen), a[i]) - nen.begin() + 1;

    calc(L);
    reverse(a + 1, a + N + 1);
    calc(R);
    reverse(R + 1, R + N + 1);
    long long ans = 0;
    FOR(i, 1, N) ans += 1ll * L[i] * R[i];
    cout << ans;
    cerr << "Time elapsed: " << TIME << " s.\n";
    return (0 ^ 0);
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	94 ms	14144 KB	Output is correct
3	Correct	94 ms	14164 KB	Output is correct
4	Correct	94 ms	14112 KB	Output is correct
5	Correct	95 ms	14084 KB	Output is correct
6	Correct	97 ms	14232 KB	Output is correct
7	Correct	99 ms	14100 KB	Output is correct
8	Correct	103 ms	14136 KB	Output is correct
9	Correct	93 ms	13756 KB	Output is correct
10	Correct	94 ms	13668 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	70 ms	8124 KB	Output is correct
2	Correct	71 ms	8060 KB	Output is correct
3	Correct	70 ms	8068 KB	Output is correct
4	Correct	69 ms	8056 KB	Output is correct
5	Correct	70 ms	8120 KB	Output is correct
6	Correct	70 ms	8120 KB	Output is correct
7	Correct	72 ms	8004 KB	Output is correct
8	Correct	65 ms	8112 KB	Output is correct
9	Correct	65 ms	8084 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	70 ms	8124 KB	Output is correct
2	Correct	71 ms	8060 KB	Output is correct
3	Correct	70 ms	8068 KB	Output is correct
4	Correct	69 ms	8056 KB	Output is correct
5	Correct	70 ms	8120 KB	Output is correct
6	Correct	70 ms	8120 KB	Output is correct
7	Correct	72 ms	8004 KB	Output is correct
8	Correct	65 ms	8112 KB	Output is correct
9	Correct	65 ms	8084 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	79 ms	8312 KB	Output is correct
12	Correct	81 ms	8368 KB	Output is correct
13	Correct	82 ms	8328 KB	Output is correct
14	Correct	78 ms	8328 KB	Output is correct
15	Correct	79 ms	8384 KB	Output is correct
16	Correct	78 ms	8316 KB	Output is correct
17	Correct	79 ms	8308 KB	Output is correct
18	Correct	62 ms	8372 KB	Output is correct
19	Correct	57 ms	8320 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	5 ms	856 KB	Output is correct
12	Correct	5 ms	860 KB	Output is correct
13	Correct	4 ms	860 KB	Output is correct
14	Correct	5 ms	924 KB	Output is correct
15	Correct	5 ms	852 KB	Output is correct
16	Correct	5 ms	852 KB	Output is correct
17	Correct	4 ms	852 KB	Output is correct
18	Correct	5 ms	852 KB	Output is correct
19	Correct	4 ms	724 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	70 ms	8124 KB	Output is correct
2	Correct	71 ms	8060 KB	Output is correct
3	Correct	70 ms	8068 KB	Output is correct
4	Correct	69 ms	8056 KB	Output is correct
5	Correct	70 ms	8120 KB	Output is correct
6	Correct	70 ms	8120 KB	Output is correct
7	Correct	72 ms	8004 KB	Output is correct
8	Correct	65 ms	8112 KB	Output is correct
9	Correct	65 ms	8084 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	79 ms	8312 KB	Output is correct
12	Correct	81 ms	8368 KB	Output is correct
13	Correct	82 ms	8328 KB	Output is correct
14	Correct	78 ms	8328 KB	Output is correct
15	Correct	79 ms	8384 KB	Output is correct
16	Correct	78 ms	8316 KB	Output is correct
17	Correct	79 ms	8308 KB	Output is correct
18	Correct	62 ms	8372 KB	Output is correct
19	Correct	57 ms	8320 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	129 ms	9556 KB	Output is correct
22	Correct	119 ms	9576 KB	Output is correct
23	Correct	112 ms	9528 KB	Output is correct
24	Correct	113 ms	9576 KB	Output is correct
25	Correct	112 ms	9580 KB	Output is correct
26	Correct	114 ms	9612 KB	Output is correct
27	Correct	115 ms	9600 KB	Output is correct
28	Correct	65 ms	9504 KB	Output is correct
29	Correct	64 ms	9528 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	94 ms	14144 KB	Output is correct
3	Correct	94 ms	14164 KB	Output is correct
4	Correct	94 ms	14112 KB	Output is correct
5	Correct	95 ms	14084 KB	Output is correct
6	Correct	97 ms	14232 KB	Output is correct
7	Correct	99 ms	14100 KB	Output is correct
8	Correct	103 ms	14136 KB	Output is correct
9	Correct	93 ms	13756 KB	Output is correct
10	Correct	94 ms	13668 KB	Output is correct
11	Correct	70 ms	8124 KB	Output is correct
12	Correct	71 ms	8060 KB	Output is correct
13	Correct	70 ms	8068 KB	Output is correct
14	Correct	69 ms	8056 KB	Output is correct
15	Correct	70 ms	8120 KB	Output is correct
16	Correct	70 ms	8120 KB	Output is correct
17	Correct	72 ms	8004 KB	Output is correct
18	Correct	65 ms	8112 KB	Output is correct
19	Correct	65 ms	8084 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	79 ms	8312 KB	Output is correct
22	Correct	81 ms	8368 KB	Output is correct
23	Correct	82 ms	8328 KB	Output is correct
24	Correct	78 ms	8328 KB	Output is correct
25	Correct	79 ms	8384 KB	Output is correct
26	Correct	78 ms	8316 KB	Output is correct
27	Correct	79 ms	8308 KB	Output is correct
28	Correct	62 ms	8372 KB	Output is correct
29	Correct	57 ms	8320 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	348 KB	Output is correct
35	Correct	1 ms	340 KB	Output is correct
36	Correct	1 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	0 ms	340 KB	Output is correct
41	Correct	5 ms	856 KB	Output is correct
42	Correct	5 ms	860 KB	Output is correct
43	Correct	4 ms	860 KB	Output is correct
44	Correct	5 ms	924 KB	Output is correct
45	Correct	5 ms	852 KB	Output is correct
46	Correct	5 ms	852 KB	Output is correct
47	Correct	4 ms	852 KB	Output is correct
48	Correct	5 ms	852 KB	Output is correct
49	Correct	4 ms	724 KB	Output is correct
50	Correct	1 ms	340 KB	Output is correct
51	Correct	129 ms	9556 KB	Output is correct
52	Correct	119 ms	9576 KB	Output is correct
53	Correct	112 ms	9528 KB	Output is correct
54	Correct	113 ms	9576 KB	Output is correct
55	Correct	112 ms	9580 KB	Output is correct
56	Correct	114 ms	9612 KB	Output is correct
57	Correct	115 ms	9600 KB	Output is correct
58	Correct	65 ms	9504 KB	Output is correct
59	Correct	64 ms	9528 KB	Output is correct
60	Correct	1 ms	340 KB	Output is correct
61	Correct	160 ms	14340 KB	Output is correct
62	Correct	152 ms	14192 KB	Output is correct
63	Correct	153 ms	14100 KB	Output is correct
64	Correct	151 ms	14212 KB	Output is correct
65	Correct	153 ms	14228 KB	Output is correct
66	Correct	152 ms	14140 KB	Output is correct
67	Correct	150 ms	14156 KB	Output is correct
68	Correct	161 ms	13696 KB	Output is correct
69	Correct	118 ms	9744 KB	Output is correct
70	Correct	0 ms	336 KB	Output is correct

답안 #680895

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