답안 #535730

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
535730	2022-03-11T03:50:11 Z	sam571128	Group Photo (JOI21_ho_t3)	C++17	64 / 100	18 ms	5708 KB

Main

#include <bits/stdc++.h>

#define int long long
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const int N = 1e3+5;
int bit[N][2], inv[N][N];

void update(int idx, int pos, int val){
    while(pos < N){
        bit[pos][idx] += val;
        pos += pos&-pos;
    }
}

int query(int idx, int pos){
    int res = 0;
    while(pos){
        res += bit[pos][idx];
        pos -= pos&-pos;
    }
    return res;
}

signed main(){
    fastio
    int n;
    cin >> n;
    int pos[n+1] = {};

    for(int i = 1;i <= n;i++){
        int x;
        cin >> x;
        pos[x] = i;
    }

    int arr[n+1];
    iota(arr,arr+n+1,0);
    for(int i = 1;i <= n;i++){
        arr[i] = pos[arr[i]];
    }

    for(int i = 1;i <= n;i++){
        for(int j = 0;j <= n;j++){
            bit[j][0] = 0;
        }
        for(int j = i;j <= n;j++){
            inv[i][j] = inv[i][j-1] + query(0,arr[j]) + query(1,N-1) - query(1,arr[j]);
            update(0,arr[j],1); 
        }
        update(1,arr[i],1);
    }

    int dp[n+1] = {};
    fill(dp+1,dp+n+1,1e18);

    for(int i = 1;i <= n;i++){
        for(int j = 0;j < i;j++){
            dp[i] = min(dp[i],dp[j] + inv[j+1][i]);
            //inv => inversions after reverse
        }
    }

    cout << dp[n] << "\n";
}

Subtask #1
5.0 / 5.0

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

Subtask #2
7.0 / 7.0

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

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	2 ms	1236 KB	Output is correct
22	Correct	2 ms	1236 KB	Output is correct
23	Correct	2 ms	1236 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1236 KB	Output is correct
26	Correct	2 ms	1236 KB	Output is correct
27	Correct	2 ms	1236 KB	Output is correct
28	Correct	2 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	2 ms	1236 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	2 ms	1236 KB	Output is correct
22	Correct	2 ms	1236 KB	Output is correct
23	Correct	2 ms	1236 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1236 KB	Output is correct
26	Correct	2 ms	1236 KB	Output is correct
27	Correct	2 ms	1236 KB	Output is correct
28	Correct	2 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	2 ms	1236 KB	Output is correct
31	Correct	14 ms	5632 KB	Output is correct
32	Correct	14 ms	5588 KB	Output is correct
33	Correct	13 ms	5584 KB	Output is correct
34	Correct	18 ms	5708 KB	Output is correct
35	Correct	15 ms	5588 KB	Output is correct
36	Correct	14 ms	5696 KB	Output is correct
37	Correct	15 ms	5656 KB	Output is correct
38	Correct	12 ms	5704 KB	Output is correct
39	Correct	13 ms	5580 KB	Output is correct
40	Correct	13 ms	5580 KB	Output is correct

Subtask #5
0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	2 ms	1236 KB	Output is correct
22	Correct	2 ms	1236 KB	Output is correct
23	Correct	2 ms	1236 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	2 ms	1236 KB	Output is correct
26	Correct	2 ms	1236 KB	Output is correct
27	Correct	2 ms	1236 KB	Output is correct
28	Correct	2 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	2 ms	1236 KB	Output is correct
31	Correct	14 ms	5632 KB	Output is correct
32	Correct	14 ms	5588 KB	Output is correct
33	Correct	13 ms	5584 KB	Output is correct
34	Correct	18 ms	5708 KB	Output is correct
35	Correct	15 ms	5588 KB	Output is correct
36	Correct	14 ms	5696 KB	Output is correct
37	Correct	15 ms	5656 KB	Output is correct
38	Correct	12 ms	5704 KB	Output is correct
39	Correct	13 ms	5580 KB	Output is correct
40	Correct	13 ms	5580 KB	Output is correct
41	Runtime error	1 ms	644 KB	Execution killed with signal 11
42	Halted	0 ms	0 KB	-

답안 #535730

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 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
0 / 36.0