oj.uz

답안 #948698

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
948698 2024-03-18T11:34:09 Z shenfe1 Bulldozer (JOI17_bulldozer) C++17
55 / 100
 801 ms 68760 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;
    // 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]]);
    if(k==sz(slope)-1||slope[k].F!=slope[k+1].F)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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Incorrect 1 ms 1116 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1116 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 1116 KB Output is correct
5 Correct 2 ms 1116 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 1116 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 0 ms 600 KB Output is correct
12 Correct 1 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 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 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 1368 KB Output is correct
24 Correct 2 ms 1116 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 1116 KB Output is correct
28 Correct 2 ms 940 KB Output is correct
29 Correct 2 ms 1112 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 1112 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1116 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 1116 KB Output is correct
5 Correct 2 ms 1116 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 1116 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 0 ms 600 KB Output is correct
12 Correct 1 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 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 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 1368 KB Output is correct
24 Correct 2 ms 1116 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 1116 KB Output is correct
28 Correct 2 ms 940 KB Output is correct
29 Correct 2 ms 1112 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 1112 KB Output is correct
33 Correct 774 ms 68204 KB Output is correct
34 Correct 758 ms 67640 KB Output is correct
35 Correct 770 ms 67236 KB Output is correct
36 Correct 793 ms 67772 KB Output is correct
37 Correct 773 ms 68028 KB Output is correct
38 Correct 764 ms 67244 KB Output is correct
39 Correct 767 ms 66920 KB Output is correct
40 Correct 781 ms 67772 KB Output is correct
41 Correct 763 ms 66748 KB Output is correct
42 Correct 770 ms 68008 KB Output is correct
43 Correct 785 ms 66732 KB Output is correct
44 Correct 786 ms 68536 KB Output is correct
45 Correct 767 ms 68564 KB Output is correct
46 Correct 759 ms 68004 KB Output is correct
47 Correct 761 ms 68016 KB Output is correct
48 Correct 762 ms 67232 KB Output is correct
49 Correct 760 ms 68020 KB Output is correct
50 Correct 768 ms 67504 KB Output is correct
51 Correct 764 ms 67816 KB Output is correct
52 Correct 773 ms 67504 KB Output is correct
53 Correct 776 ms 68556 KB Output is correct
54 Correct 790 ms 68760 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1116 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 1116 KB Output is correct
5 Correct 2 ms 1116 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 1116 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 0 ms 600 KB Output is correct
12 Correct 1 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 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 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 1368 KB Output is correct
24 Correct 2 ms 1116 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 1116 KB Output is correct
28 Correct 2 ms 940 KB Output is correct
29 Correct 2 ms 1112 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 1112 KB Output is correct
33 Correct 774 ms 68204 KB Output is correct
34 Correct 758 ms 67640 KB Output is correct
35 Correct 770 ms 67236 KB Output is correct
36 Correct 793 ms 67772 KB Output is correct
37 Correct 773 ms 68028 KB Output is correct
38 Correct 764 ms 67244 KB Output is correct
39 Correct 767 ms 66920 KB Output is correct
40 Correct 781 ms 67772 KB Output is correct
41 Correct 763 ms 66748 KB Output is correct
42 Correct 770 ms 68008 KB Output is correct
43 Correct 785 ms 66732 KB Output is correct
44 Correct 786 ms 68536 KB Output is correct
45 Correct 767 ms 68564 KB Output is correct
46 Correct 759 ms 68004 KB Output is correct
47 Correct 761 ms 68016 KB Output is correct
48 Correct 762 ms 67232 KB Output is correct
49 Correct 760 ms 68020 KB Output is correct
50 Correct 768 ms 67504 KB Output is correct
51 Correct 764 ms 67816 KB Output is correct
52 Correct 773 ms 67504 KB Output is correct
53 Correct 776 ms 68556 KB Output is correct
54 Correct 790 ms 68760 KB Output is correct
55 Correct 764 ms 68408 KB Output is correct
56 Correct 765 ms 66736 KB Output is correct
57 Correct 770 ms 68176 KB Output is correct
58 Correct 763 ms 67988 KB Output is correct
59 Correct 800 ms 68400 KB Output is correct
60 Correct 770 ms 68140 KB Output is correct
61 Correct 784 ms 67748 KB Output is correct
62 Correct 765 ms 68020 KB Output is correct
63 Correct 776 ms 68272 KB Output is correct
64 Correct 801 ms 68196 KB Output is correct
65 Incorrect 774 ms 68540 KB Output isn't correct
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Incorrect 1 ms 1116 KB Output isn't correct
6 Halted 0 ms 0 KB -