oj.uz

Submission #770037

# Submission time Handle Problem Language Result Execution time Memory
770037 2023-06-30T17:24:54 Z bachhoangxuan Group Photo (JOI21_ho_t3) C++17
100 / 100
 231 ms 196456 KB 
// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),erase(x)
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define int long long
#define ld long double
#define pii pair<int,int>
#define piii pair<pii,int>
#define mpp make_pair
#define fi first
#define se second
const int inf=1e18;
const int mod=1e9+7;
const int maxn=100005;
const int bl=650;
const int maxs=655;
const int maxm=200005;
const int maxq=500005;
const int maxl=20;
const int maxa=250000;
const int root=3;
int power(int a,int n){
    int res=1;
    while(n){
        if(n&1) res=res*a%mod;
        a=a*a%mod;n>>=1;
    }
    return res;
}
const int iroot=power(3,mod-2);
const int base=101;

void solve(){
    int n;cin >> n;
    vector<int> h(n+1,0),dp(n+1,0),c(n+1,0),num(n+1,0);
    vector<vector<int>> cost(n+1,vector<int>(n+1,0));
    for(int i=1;i<=n;i++){int x;cin >> x;h[x]=i;}
    //for(int i=1;i<=n;i++) cout << h[i] << ' ';
    //cout << '\n';
    for(int i=1;i<=n;i++){
        c[i]=c[i-1];
        for(int j=1;j<i;j++) c[i]+=(h[i]>h[j]);
        //cout << c[i] << ' ';
    }
    //cout << '\n';
    for(int i=0;i<n;i++){
        for(int j=1;j<=h[i];j++) num[j]++;
        for(int j=i+1;j<=n;j++) cost[i][j]=cost[i][j-1]+num[h[j]];
        for(int j=i+1;j<=n;j++){
            cost[i][j]=c[j]-c[i]-(j-i)*i+2*cost[i][j];
            //cout << cost[i][j] << ' ';
        }
        //cout << '\n';
    }
    //cout << '\n';
    for(int i=1;i<=n;i++){
        dp[i]=inf;
        for(int j=0;j<i;j++) dp[i]=min(dp[i],dp[j]+cost[j][i]);
    }
    cout << dp[n] << '\n';
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    int test=1;//cin >> test;
    while(test--) solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 328 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 328 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 576 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 580 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 596 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 328 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 576 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 580 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 596 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 4 ms 5332 KB Output is correct
32 Correct 4 ms 5332 KB Output is correct
33 Correct 4 ms 5332 KB Output is correct
34 Correct 4 ms 5280 KB Output is correct
35 Correct 4 ms 5332 KB Output is correct
36 Correct 4 ms 5332 KB Output is correct
37 Correct 4 ms 5332 KB Output is correct
38 Correct 4 ms 5316 KB Output is correct
39 Correct 4 ms 5404 KB Output is correct
40 Correct 4 ms 5332 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 320 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 328 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 576 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 580 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 596 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 4 ms 5332 KB Output is correct
32 Correct 4 ms 5332 KB Output is correct
33 Correct 4 ms 5332 KB Output is correct
34 Correct 4 ms 5280 KB Output is correct
35 Correct 4 ms 5332 KB Output is correct
36 Correct 4 ms 5332 KB Output is correct
37 Correct 4 ms 5332 KB Output is correct
38 Correct 4 ms 5316 KB Output is correct
39 Correct 4 ms 5404 KB Output is correct
40 Correct 4 ms 5332 KB Output is correct
41 Correct 220 ms 196260 KB Output is correct
42 Correct 212 ms 196204 KB Output is correct
43 Correct 214 ms 196408 KB Output is correct
44 Correct 231 ms 196300 KB Output is correct
45 Correct 216 ms 196344 KB Output is correct
46 Correct 219 ms 196424 KB Output is correct
47 Correct 227 ms 196452 KB Output is correct
48 Correct 221 ms 196428 KB Output is correct
49 Correct 215 ms 196452 KB Output is correct
50 Correct 226 ms 196456 KB Output is correct
51 Correct 220 ms 196368 KB Output is correct
52 Correct 229 ms 196428 KB Output is correct
53 Correct 214 ms 196380 KB Output is correct
54 Correct 230 ms 196428 KB Output is correct
55 Correct 220 ms 196448 KB Output is correct