답안 #625117

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
625117	2022-08-09T12:00:46 Z	Abrar_Al_Samit	Group Photo (JOI21_ho_t3)	C++17	64 / 100	116 ms	4840 KB

Main

#include<bits/stdc++.h>
using namespace std;

const int MX = 2004;

int n;
int a[MX];
int cost[MX][MX];
int st[MX*4];

void upd(int l, int r, int id, int val, int v) {
  if(l==r) {
    st[v] = val;
    return;
  }
  int mid = (l+r)/2;
  if(id<=mid) upd(l, mid, id, val, v*2);
  else upd(mid+1, r, id, val, v*2+1);
  st[v] = st[v*2]+st[v*2+1];
}
int query(int l, int r, int L, int R, int v) {
  if(l>=L && r<=R) return st[v];
  if(l>R || r<L) return 0;

  int mid = (l+r)/2;
  return query(l, mid, L, R, v*2) + query(mid+1, r, L, R, v*2+1);
}
int dp[MX];
int solve(int i) {
  if(i>n) return 0;
  int &ret = dp[i];
  if(ret!=-1) return ret;
  ret = INT_MAX;

  for(int j=i; j<=n; ++j) {
    ret = min(ret, solve(j+1)+cost[i][j]);
  }
  return ret;
}
int alt[MX];
void PlayGround() {
  cin>>n;
  for(int i=1; i<=n; ++i) {
    cin>>a[i];
    alt[a[i]] = i;
  }

  int inv[n+1] = {};
  for(int i=1; i<=n; ++i) {
    for(int j=alt[i]-1; j>0; --j) if(a[j]>i) {
      ++inv[i];
    }
  }

  for(int j=1; j<=n; ++j) {
    for(int i=1; i<=n; ++i) {
      upd(1, n, i, 0, 1);
    }
    for(int i=j; i>0; --i) {
      cost[i][j] = inv[i] - query(1, n, 1, alt[i], 1) + query(1, n, alt[i], n, 1);
      if(i!=j) cost[i][j] += cost[i+1][j];
      upd(1, n, alt[i], 1, 1);
    }
  }

  memset(dp, -1, sizeof dp);
  cout<<solve(1)<<'\n';
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  PlayGround();
  return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	332 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	328 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 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 #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	332 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	328 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 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	1 ms	340 KB	Output is correct
12	Correct	1 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	1 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	1 ms	340 KB	Output is correct
19	Correct	1 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	1 ms	340 KB	Output is correct
2	Correct	1 ms	332 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	328 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 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	1 ms	340 KB	Output is correct
12	Correct	1 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	1 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	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	5 ms	1236 KB	Output is correct
22	Correct	6 ms	1236 KB	Output is correct
23	Correct	5 ms	1236 KB	Output is correct
24	Correct	6 ms	1228 KB	Output is correct
25	Correct	5 ms	1236 KB	Output is correct
26	Correct	6 ms	1228 KB	Output is correct
27	Correct	6 ms	1124 KB	Output is correct
28	Correct	5 ms	1236 KB	Output is correct
29	Correct	5 ms	1224 KB	Output is correct
30	Correct	5 ms	1236 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	332 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	328 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 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	1 ms	340 KB	Output is correct
12	Correct	1 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	1 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	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	5 ms	1236 KB	Output is correct
22	Correct	6 ms	1236 KB	Output is correct
23	Correct	5 ms	1236 KB	Output is correct
24	Correct	6 ms	1228 KB	Output is correct
25	Correct	5 ms	1236 KB	Output is correct
26	Correct	6 ms	1228 KB	Output is correct
27	Correct	6 ms	1124 KB	Output is correct
28	Correct	5 ms	1236 KB	Output is correct
29	Correct	5 ms	1224 KB	Output is correct
30	Correct	5 ms	1236 KB	Output is correct
31	Correct	112 ms	4744 KB	Output is correct
32	Correct	110 ms	4740 KB	Output is correct
33	Correct	109 ms	4828 KB	Output is correct
34	Correct	109 ms	4736 KB	Output is correct
35	Correct	113 ms	4756 KB	Output is correct
36	Correct	113 ms	4740 KB	Output is correct
37	Correct	109 ms	4748 KB	Output is correct
38	Correct	112 ms	4788 KB	Output is correct
39	Correct	109 ms	4828 KB	Output is correct
40	Correct	116 ms	4840 KB	Output is correct

Subtask #5
0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	332 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	328 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 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	1 ms	340 KB	Output is correct
12	Correct	1 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	1 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	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	5 ms	1236 KB	Output is correct
22	Correct	6 ms	1236 KB	Output is correct
23	Correct	5 ms	1236 KB	Output is correct
24	Correct	6 ms	1228 KB	Output is correct
25	Correct	5 ms	1236 KB	Output is correct
26	Correct	6 ms	1228 KB	Output is correct
27	Correct	6 ms	1124 KB	Output is correct
28	Correct	5 ms	1236 KB	Output is correct
29	Correct	5 ms	1224 KB	Output is correct
30	Correct	5 ms	1236 KB	Output is correct
31	Correct	112 ms	4744 KB	Output is correct
32	Correct	110 ms	4740 KB	Output is correct
33	Correct	109 ms	4828 KB	Output is correct
34	Correct	109 ms	4736 KB	Output is correct
35	Correct	113 ms	4756 KB	Output is correct
36	Correct	113 ms	4740 KB	Output is correct
37	Correct	109 ms	4748 KB	Output is correct
38	Correct	112 ms	4788 KB	Output is correct
39	Correct	109 ms	4828 KB	Output is correct
40	Correct	116 ms	4840 KB	Output is correct
41	Runtime error	2 ms	468 KB	Execution killed with signal 11
42	Halted	0 ms	0 KB	-

답안 #625117

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