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Submission #961635

# Submission time Handle Problem Language Result Execution time Memory
961635 2024-04-12T09:19:09 Z vjudge1 Safety (NOI18_safety) C++17
13 / 100
 142 ms 8836 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=1e4+5;
const int B=90;
const int N=105;
const int block=400;
const int maxB=MAX/B+10;
const ll inf=2e18;  
const int mod=998244353;
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;
}

int n,h;
int s[MAX];
multiset<int> x,y;
int dp[1010][2010];

void solve(){
  cin>>n>>h;
  int slope=0;
  int kx=0,ky=0;
  int cur=0;
  for(int i=1;i<=n;i++){
    cin>>s[i];
    slope--;
    {
      kx+=h;
      while(!x.empty()&&*x.begin()-kx<=0){
        slope++;
        x.erase(x.begin());
      }
    }
    {
      y.in(s[i]-kx);
      y.in(s[i]-kx);
      while(!x.empty()&&slope+sz(x)>0){
        int f=*x.rbegin();
        x.erase(--x.end());
        f-=kx;
        f-=kx;
        y.in(f);
      }
      while(!y.empty()&&slope+sz(x)<0){
        int f=*y.begin();
        y.erase(y.begin());
        f+=kx;
        f+=kx;
        x.in(f);
      }
    }
    // cout<<"!!!\n";
    // for(int f:x)cout<<f-kx<<" ";
    // cout<<"\n";
    // for(int f:y){
    //   cout<<f+kx<<" ";
    // }
    // cout<<"\n";
  }
  // cout<<slope<<" "<<sz(x)<<"\n";
  // cout<<*x.begin()<<"\n";
  vector<int> v;
  for(int f:x){
    v.pb(f-kx);
  }
  int last=0;
  for(int i=0;i<sz(v);i++){
    if(last==v[i]){
      slope++;
      continue;
    }
    // cout<<last<<" "<<v[i]<<" "<<slope<<"\n";
    cur+=(v[i]-last)*slope;
    slope++;
    last=v[i];
  }

  for(int i=1;i<=n;i++){
    for(int j=0;j<=2000;j++){
      dp[i][j]=inf;
    }
  }
  for(int i=1;i<=n;i++){
    for(int j=0;j<=500;j++){
      for(int p=max(0ll,j-h);p<=min(500ll,j+h);p++){
        dp[i][j]=min(dp[i-1][p]+abs(s[i]-j),dp[i][j]);
      }
    }
  }
  int ans=inf;
  for(int j=0;j<=500;j++)ans=min(ans,dp[n][j]);

cout<<ans;
return;
  cout<<cur+dp[n][0]<<"\n";
}

//6 5 4 4 4 6 8 12 16 20 24 

signed main(){
  //  freopen("help.in","r",stdin);
  //  freopen("help.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

safety.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize("Ofast")
      | 
safety.cpp:4: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    4 | #pragma target("avx2")
      | 
safety.cpp: In function 'void solve()':
safety.cpp:54:12: warning: unused variable 'ky' [-Wunused-variable]
   54 |   int kx=0,ky=0;
      |            ^~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 2652 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 7 ms 8796 KB Output is correct
14 Correct 3 ms 8796 KB Output is correct
15 Correct 142 ms 8836 KB Output is correct
16 Correct 74 ms 8792 KB Output is correct
17 Correct 114 ms 8832 KB Output is correct
18 Correct 73 ms 6748 KB Output is correct
19 Correct 3 ms 8796 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 7 ms 8796 KB Output is correct
14 Correct 3 ms 8796 KB Output is correct
15 Correct 142 ms 8836 KB Output is correct
16 Correct 74 ms 8792 KB Output is correct
17 Correct 114 ms 8832 KB Output is correct
18 Correct 73 ms 6748 KB Output is correct
19 Correct 3 ms 8796 KB Output is correct
20 Incorrect 128 ms 8796 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #7
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 7 ms 8796 KB Output is correct
14 Correct 3 ms 8796 KB Output is correct
15 Correct 142 ms 8836 KB Output is correct
16 Correct 74 ms 8792 KB Output is correct
17 Correct 114 ms 8832 KB Output is correct
18 Correct 73 ms 6748 KB Output is correct
19 Correct 3 ms 8796 KB Output is correct
20 Incorrect 128 ms 8796 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #8
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #9
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 624 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -