oj.uz

Submission #493788

# Submission time Handle Problem Language Result Execution time Memory
493788 2021-12-13T01:53:44 Z i_am_noob Group Photo (JOI21_ho_t3) C++17
100 / 100
 486 ms 892 KB 
#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define int ll
#define rep(n) rep1(i,n)
#define rep1(i,n) rep2(i,0,n)
#define rep2(i,a,b) for(int i=a; i<(b); ++i)
#define rep3(i,a,b) for(int i=a; i>=(b); --i)
#define pii pair<int,int>
#define pb push_back
#define all(a) a.begin(),a.end()
#define sz(a) ((int)a.size())
#define pow2(x) (1ll<<(x))
#define inf 1000'000'000'000'000'000
#ifdef i_am_noob
#define bug(...) cerr << "#" << __LINE__ << ": " << #__VA_ARGS__ << "- ",_do(__VA_ARGS__)
template<typename T> void _do(T x){cerr << x << endl;}
template<typename T, typename ... S> void _do(T x, S ...y){cerr << x << ", ";_do(y...);}
#else
#define bug(...) 49
#endif

const int maxn=5005;

int n,a[maxn],dp[maxn],pos[maxn];

int bit[maxn];
void modify(int p, int x){for(int i=p+1; i<maxn; i+=i&-i) bit[i]+=x;}
int query(int r){
    int res=0;
    for(int i=r+1; i; i-=i&-i) res+=bit[i];
    return res;
}

signed main(){
    ios_base::sync_with_stdio(0),cin.tie(0);
    cin >> n;
    rep(n) cin >> a[i];
    rep(n) a[i]--;
    rep2(i,2,n+1){
        vector<int> vec;
        rep1(j,n) if(a[j]<i) vec.pb(j);
        rep1(j,sz(vec)) pos[a[vec[j]]]=j;
        //rep1(j,sz(vec)) bug(vec[j]);
        memset(bit,0,sizeof bit);
        int cur=0,sum=0;
        dp[i]=inf;
        rep3(j,i-1,0){
            cur+=i-j-1-query(pos[j]);
            sum+=pos[j]+1;
            dp[i]=min(dp[i],dp[j]+cur+(i*(i+1)/2-j*(j+1)/2-sum));
            modify(pos[j],1);
        }
        bug(dp[i]);
    }
    cout << dp[n] << endl;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:21:18: warning: statement has no effect [-Wunused-value]
   21 | #define bug(...) 49
      |                  ^~
Main.cpp:55:9: note: in expansion of macro 'bug'
   55 |         bug(dp[i]);
      |         ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 316 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 312 KB Output is correct
30 Correct 2 ms 372 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 316 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 312 KB Output is correct
30 Correct 2 ms 372 KB Output is correct
31 Correct 12 ms 332 KB Output is correct
32 Correct 13 ms 400 KB Output is correct
33 Correct 13 ms 388 KB Output is correct
34 Correct 13 ms 316 KB Output is correct
35 Correct 14 ms 500 KB Output is correct
36 Correct 15 ms 404 KB Output is correct
37 Correct 16 ms 460 KB Output is correct
38 Correct 13 ms 332 KB Output is correct
39 Correct 13 ms 404 KB Output is correct
40 Correct 14 ms 332 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 316 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 312 KB Output is correct
30 Correct 2 ms 372 KB Output is correct
31 Correct 12 ms 332 KB Output is correct
32 Correct 13 ms 400 KB Output is correct
33 Correct 13 ms 388 KB Output is correct
34 Correct 13 ms 316 KB Output is correct
35 Correct 14 ms 500 KB Output is correct
36 Correct 15 ms 404 KB Output is correct
37 Correct 16 ms 460 KB Output is correct
38 Correct 13 ms 332 KB Output is correct
39 Correct 13 ms 404 KB Output is correct
40 Correct 14 ms 332 KB Output is correct
41 Correct 476 ms 656 KB Output is correct
42 Correct 458 ms 700 KB Output is correct
43 Correct 457 ms 748 KB Output is correct
44 Correct 457 ms 580 KB Output is correct
45 Correct 480 ms 892 KB Output is correct
46 Correct 467 ms 452 KB Output is correct
47 Correct 481 ms 744 KB Output is correct
48 Correct 480 ms 580 KB Output is correct
49 Correct 466 ms 572 KB Output is correct
50 Correct 486 ms 524 KB Output is correct
51 Correct 462 ms 576 KB Output is correct
52 Correct 470 ms 580 KB Output is correct
53 Correct 461 ms 580 KB Output is correct
54 Correct 462 ms 684 KB Output is correct
55 Correct 452 ms 572 KB Output is correct