oj.uz

Submission #948696

# Submission time Handle Problem Language Result Execution time Memory
948696 2024-03-18T11:31:50 Z shenfe1 Bulldozer (JOI17_bulldozer) C++17
55 / 100
 796 ms 68540 KB 
#include <bits/stdc++.h>

#pragma optimize("Ofast")
#pragma target("avx2")

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define pf push_front
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define mem(a,i) memset(a,i,sizeof(a))
#define sz(s) (int)s.size()
#define y1 yy
#define ppb pop_back
#define lb lower_bound
#define ub upper_bound
#define gcd(a,b) __gcd(a,b)
#define in insert
#define int ll

const int MAX=2000+15;
const int B=500;
const int maxB=1000;
const int N=104;
const int block=450;
const ll inf=1e9;  
const int mod=1e9+7;
const int mod1=1e9+9;
const ld eps=1e-9;

int dx[8]={1,0,-1,0,1,-1,-1,1};
int dy[8]={0,1,0,-1,1,-1,1,-1};

int binpow(int a,int n){
  if(!n)return 1;
  if(n%2==1)return a*binpow(a,n-1)%mod;
  int k=binpow(a,n/2);
  return k*k%mod;
}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n;
int x[MAX],y[MAX],a[MAX];
vector<pair<ld,pii>> slope;
vector<pair<pii,int>> vec;
int pos[MAX];
int f[MAX];
int p[MAX],mn[MAX],mx[MAX];

struct segtree{
  struct node{
    int pref,suf,sum,ans;
    node(){
      pref=suf=sum=ans=0;
    }
  }t[4*MAX];

  node mrg(node a,node b){
    node res;
    res.sum=a.sum+b.sum;
    res.ans=max({a.ans,b.ans,a.suf+b.pref});
    res.suf=max(b.suf,b.sum+a.suf);
    res.pref=max(a.pref,a.sum+b.pref);
    return res;
  } 

  void update(int v,int tl,int tr,int pos,int x){
    if(tl==tr){
      t[v].pref=max(0ll,x);
      t[v].suf=max(0ll,x);
      t[v].ans=max(0ll,x);
      t[v].sum=x;
      return;
    }
    int tm=(tl+tr)/2;
    if(pos<=tm)update(2*v,tl,tm,pos,x);
    else update(2*v+1,tm+1,tr,pos,x);
    t[v]=mrg(t[2*v],t[2*v+1]);
  }
}t;

void solve(){
  cin>>n;
  for(int i=1;i<=n;i++){
    cin>>x[i]>>y[i]>>a[i];
    vec.pb({{x[i],-y[i]},i});
  }
  for(int i=1;i<=n;i++){
    for(int j=i+1;j<=n;j++){
      if(x[i]!=x[j]){
        ld k=(0.0+y[i]-y[j])/(x[i]-x[j]);
        slope.pb({k,{i,j}});
        // cout<<i<<" "<<j<<" "<<k<<"\n";
      }
    }
  }
  sort(all(vec));
  for(int i=0;i<n;i++){
    f[i+1]=a[vec[i].S];
    t.update(1,1,n,i+1,f[i+1]);
    pos[vec[i].S]=i+1;
  }
  sort(all(slope));
  // reverse(all(slope));
  int ans=t.t[1].ans;
  for(int k=0;k<sz(slope);k++){
    int i=slope[k].S.F,j=slope[k].S.S;
    if(abs(pos[i]-pos[j])!=1){
      cout<<"HUI\n";
      return;
    }
    // cout<<slope[k].F<<" "<<pos[i]<<" "<<pos[j]<<"\n";
    swap(f[pos[i]],f[pos[j]]);
    swap(pos[i],pos[j]);
    t.update(1,1,n,pos[i],f[pos[i]]);
    t.update(1,1,n,pos[j],f[pos[j]]);
    ans=max(ans,t.t[1].ans);
    // cout<<t.t[1].ans<<"\n";
    // for(int i=1;i<=n;i++){
    //   cout<<f[i]<<" ";
    // }
    // cout<<"\n";
  }
  cout<<ans<<"\n";
}

signed main(){
  // freopen("triangles.in","r",stdin);
  // freopen("triangles.out","w",stdout);
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  // prec();
  int t=1;
  // cin>>t;
  while(t--){
    solve();
  }
}

Compilation message

bulldozer.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize("Ofast")
      | 
bulldozer.cpp:4: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    4 | #pragma target("avx2")
      |

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 1112 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1112 KB Output is correct
2 Correct 2 ms 1112 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 980 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 1116 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1116 KB Output is correct
9 Correct 2 ms 1112 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 1116 KB Output is correct
22 Correct 2 ms 1116 KB Output is correct
23 Correct 2 ms 1116 KB Output is correct
24 Correct 2 ms 1112 KB Output is correct
25 Correct 2 ms 1116 KB Output is correct
26 Correct 2 ms 1116 KB Output is correct
27 Correct 2 ms 988 KB Output is correct
28 Correct 2 ms 1116 KB Output is correct
29 Correct 2 ms 1116 KB Output is correct
30 Correct 2 ms 1116 KB Output is correct
31 Correct 2 ms 1116 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1112 KB Output is correct
2 Correct 2 ms 1112 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 980 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 1116 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1116 KB Output is correct
9 Correct 2 ms 1112 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 1116 KB Output is correct
22 Correct 2 ms 1116 KB Output is correct
23 Correct 2 ms 1116 KB Output is correct
24 Correct 2 ms 1112 KB Output is correct
25 Correct 2 ms 1116 KB Output is correct
26 Correct 2 ms 1116 KB Output is correct
27 Correct 2 ms 988 KB Output is correct
28 Correct 2 ms 1116 KB Output is correct
29 Correct 2 ms 1116 KB Output is correct
30 Correct 2 ms 1116 KB Output is correct
31 Correct 2 ms 1116 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct
33 Correct 772 ms 67744 KB Output is correct
34 Correct 778 ms 68540 KB Output is correct
35 Correct 763 ms 67744 KB Output is correct
36 Correct 753 ms 68276 KB Output is correct
37 Correct 751 ms 68540 KB Output is correct
38 Correct 757 ms 67256 KB Output is correct
39 Correct 765 ms 68456 KB Output is correct
40 Correct 780 ms 68016 KB Output is correct
41 Correct 786 ms 67740 KB Output is correct
42 Correct 755 ms 66748 KB Output is correct
43 Correct 758 ms 68004 KB Output is correct
44 Correct 746 ms 67868 KB Output is correct
45 Correct 752 ms 67836 KB Output is correct
46 Correct 747 ms 66736 KB Output is correct
47 Correct 753 ms 67260 KB Output is correct
48 Correct 768 ms 66728 KB Output is correct
49 Correct 746 ms 67224 KB Output is correct
50 Correct 751 ms 67224 KB Output is correct
51 Correct 747 ms 68016 KB Output is correct
52 Correct 752 ms 66736 KB Output is correct
53 Correct 747 ms 67772 KB Output is correct
54 Correct 796 ms 67000 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1112 KB Output is correct
2 Correct 2 ms 1112 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 980 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 1116 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1116 KB Output is correct
9 Correct 2 ms 1112 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 1116 KB Output is correct
22 Correct 2 ms 1116 KB Output is correct
23 Correct 2 ms 1116 KB Output is correct
24 Correct 2 ms 1112 KB Output is correct
25 Correct 2 ms 1116 KB Output is correct
26 Correct 2 ms 1116 KB Output is correct
27 Correct 2 ms 988 KB Output is correct
28 Correct 2 ms 1116 KB Output is correct
29 Correct 2 ms 1116 KB Output is correct
30 Correct 2 ms 1116 KB Output is correct
31 Correct 2 ms 1116 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct
33 Correct 772 ms 67744 KB Output is correct
34 Correct 778 ms 68540 KB Output is correct
35 Correct 763 ms 67744 KB Output is correct
36 Correct 753 ms 68276 KB Output is correct
37 Correct 751 ms 68540 KB Output is correct
38 Correct 757 ms 67256 KB Output is correct
39 Correct 765 ms 68456 KB Output is correct
40 Correct 780 ms 68016 KB Output is correct
41 Correct 786 ms 67740 KB Output is correct
42 Correct 755 ms 66748 KB Output is correct
43 Correct 758 ms 68004 KB Output is correct
44 Correct 746 ms 67868 KB Output is correct
45 Correct 752 ms 67836 KB Output is correct
46 Correct 747 ms 66736 KB Output is correct
47 Correct 753 ms 67260 KB Output is correct
48 Correct 768 ms 66728 KB Output is correct
49 Correct 746 ms 67224 KB Output is correct
50 Correct 751 ms 67224 KB Output is correct
51 Correct 747 ms 68016 KB Output is correct
52 Correct 752 ms 66736 KB Output is correct
53 Correct 747 ms 67772 KB Output is correct
54 Correct 796 ms 67000 KB Output is correct
55 Correct 758 ms 67684 KB Output is correct
56 Correct 772 ms 67252 KB Output is correct
57 Correct 755 ms 67640 KB Output is correct
58 Correct 751 ms 68012 KB Output is correct
59 Correct 770 ms 67748 KB Output is correct
60 Correct 751 ms 68000 KB Output is correct
61 Correct 775 ms 66876 KB Output is correct
62 Correct 753 ms 68020 KB Output is correct
63 Correct 765 ms 66976 KB Output is correct
64 Correct 758 ms 66748 KB Output is correct
65 Incorrect 352 ms 68028 KB Output isn't correct
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 1112 KB Output isn't correct
2 Halted 0 ms 0 KB -