답안 #378383

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
378383	2021-03-16T15:58:43 Z	smjleo	Group Photo (JOI21_ho_t3)	C++14	100 / 100	1161 ms	856 KB

Main

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
using namespace std;
#define int long long
#define nl '\n'
#define io ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
mt19937 rng((unsigned)chrono::steady_clock::now().time_since_epoch().count());
const int mod = 1000000007, mod2 = 998244353;

// change this
const int N = 5005;

int n, h[N], fw[N], fw2[N], pos[N], dp[N];

void update(int x, int v) {
    for (; x<N; x+=x&(-x)) fw[x] += v; 
}
int sum(int x) {
    int res = 0;
    for(; x; x-=x&(-x)) res += fw[x];
    return res;
}

void update2(int x, int v) {
    for (; x<N; x+=x&(-x)) fw2[x] += v; 
}

int sum2(int x) {
    int res = 0;
    for(; x; x-=x&(-x)) res += fw2[x];
    return res;
}

signed main() {
    io;
    cin >> n;
    for (int i=1; i<=n; i++) {
        cin >> h[i];
        pos[h[i]] = i;
    }

    for (int i=1; i<=n; i++) {
        dp[i] = 1e18;

        int ans = 0;
        for (int j=1; j<=i; j++) {
            ans += sum(pos[j] - 1);
            update(pos[j], 1);
        }
        memset(fw2, 0, sizeof fw2);
        for (int j=0; j<i; j++) {
            // find dp
            dp[i] = min(dp[i], dp[j] + ans);
            // remove
            ans -= sum(n) - sum(pos[j+1]);
            ans -= sum2(n) - sum2(pos[j+1]);
            update(pos[j+1], -1);
            // add
            ans += sum(pos[j+1]);
            update2(pos[j+1], 1);
        }
    }

    cout << dp[n] << nl;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	2 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	2 ms	364 KB	Output is correct
26	Correct	3 ms	364 KB	Output is correct
27	Correct	2 ms	364 KB	Output is correct
28	Correct	2 ms	364 KB	Output is correct
29	Correct	3 ms	364 KB	Output is correct
30	Correct	2 ms	364 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	2 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	2 ms	364 KB	Output is correct
26	Correct	3 ms	364 KB	Output is correct
27	Correct	2 ms	364 KB	Output is correct
28	Correct	2 ms	364 KB	Output is correct
29	Correct	3 ms	364 KB	Output is correct
30	Correct	2 ms	364 KB	Output is correct
31	Correct	31 ms	492 KB	Output is correct
32	Correct	27 ms	492 KB	Output is correct
33	Correct	30 ms	492 KB	Output is correct
34	Correct	27 ms	364 KB	Output is correct
35	Correct	26 ms	492 KB	Output is correct
36	Correct	25 ms	492 KB	Output is correct
37	Correct	25 ms	620 KB	Output is correct
38	Correct	25 ms	492 KB	Output is correct
39	Correct	25 ms	492 KB	Output is correct
40	Correct	27 ms	492 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	2 ms	364 KB	Output is correct
22	Correct	2 ms	364 KB	Output is correct
23	Correct	2 ms	364 KB	Output is correct
24	Correct	2 ms	364 KB	Output is correct
25	Correct	2 ms	364 KB	Output is correct
26	Correct	3 ms	364 KB	Output is correct
27	Correct	2 ms	364 KB	Output is correct
28	Correct	2 ms	364 KB	Output is correct
29	Correct	3 ms	364 KB	Output is correct
30	Correct	2 ms	364 KB	Output is correct
31	Correct	31 ms	492 KB	Output is correct
32	Correct	27 ms	492 KB	Output is correct
33	Correct	30 ms	492 KB	Output is correct
34	Correct	27 ms	364 KB	Output is correct
35	Correct	26 ms	492 KB	Output is correct
36	Correct	25 ms	492 KB	Output is correct
37	Correct	25 ms	620 KB	Output is correct
38	Correct	25 ms	492 KB	Output is correct
39	Correct	25 ms	492 KB	Output is correct
40	Correct	27 ms	492 KB	Output is correct
41	Correct	1100 ms	716 KB	Output is correct
42	Correct	1161 ms	844 KB	Output is correct
43	Correct	1156 ms	720 KB	Output is correct
44	Correct	1142 ms	748 KB	Output is correct
45	Correct	1120 ms	748 KB	Output is correct
46	Correct	1149 ms	620 KB	Output is correct
47	Correct	1145 ms	716 KB	Output is correct
48	Correct	1100 ms	620 KB	Output is correct
49	Correct	1158 ms	724 KB	Output is correct
50	Correct	1113 ms	632 KB	Output is correct
51	Correct	1133 ms	620 KB	Output is correct
52	Correct	1110 ms	856 KB	Output is correct
53	Correct	1100 ms	624 KB	Output is correct
54	Correct	1091 ms	620 KB	Output is correct
55	Correct	1107 ms	760 KB	Output is correct

답안 #378383

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0