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Submission #886660

# Submission time Handle Problem Language Result Execution time Memory
886660 2023-12-12T15:06:28 Z Caubethieunang Global Warming (CEOI18_glo) C++14
100 / 100
 241 ms 15112 KB 
#include <bits/stdc++.h>
#define ll long long
#define LOG 19
#define MASK(i) (1LL<<(i))
#define BIT(x,i) (((x)>>(i))&1)
#define FIRST_BIT(mask) __builtin_ctz((mask)&(-mask))
#define ERASE_BIT(mask) (mask)^((mask)&(-mask))
#define left _left
#define right _right
#define task "t"
using namespace std;
const ll INF=1e18;
const int iat=2e6+9;
const int mod=1e9+7;
void fast_IO()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    if(fopen(task".inp","r"))
    {
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
}
int n,x,t[iat],tx[iat],sz,store[iat];
void compress()
{
    vector <int> v;
    for(int i=1; i<=n; i++)
    {
        v.push_back(t[i]);
        v.push_back(t[i]+x);
    }
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
    sz=v.size();
    for(int i=1; i<=n; i++)
    {
        tx[i]=lower_bound(v.begin(),v.end(),t[i]+x)-v.begin()+1;
        t[i]=lower_bound(v.begin(),v.end(),t[i])-v.begin()+1;
    }
}
struct Segment
{
    int st[iat];
    void init()
    {
        memset(st,0,sizeof(st));
    }
    void update(int id, int l, int r, int pos, int val)
    {
        if(l==r)
        {
            st[id]=max(st[id],val);
            return;
        }
        int mid=(l+r)/2;
        if(pos<=mid)update(2*id,l,mid,pos,val);
        else update(2*id+1,mid+1,r,pos,val);
        st[id]=max(st[2*id],st[2*id+1]);
    }
    int getMax(int id, int l, int r, int u, int v)
    {
        if(l>v || r<u)return 0;
        if(u<=l && r<=v)return st[id];
        int mid=(l+r)/2;
        return max(getMax(2*id,l,mid,u,v),getMax(2*id+1,mid+1,r,u,v));
    }
}tree;
signed main()
{
    fast_IO();
    cin>>n>>x;
    for(int i=1; i<=n; i++)cin>>t[i];
    compress();
    int ans=0;
    for(int i=n; i>=1; i--)
    {
        store[i]=tree.getMax(1,1,sz,tx[i]+1,sz)+1;
        tree.update(1,1,sz,tx[i],store[i]);
        ans=max(ans,store[i]);
    }
    tree.init();
    for(int i=1; i<=n; i++)
    {
        ans=max(ans,store[i]+tree.getMax(1,1,sz,1,tx[i]-1));
        int tmp=tree.getMax(1,1,sz,1,t[i]-1)+1;
        tree.update(1,1,sz,t[i],tmp);
    }
    cout<<ans;
}

Compilation message

glo.cpp: In function 'void fast_IO()':
glo.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
glo.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12892 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12752 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12892 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12752 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12888 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12892 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12892 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12752 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12888 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12892 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 2 ms 12892 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 2 ms 12960 KB Output is correct
24 Correct 2 ms 12892 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 231 ms 15108 KB Output is correct
2 Correct 198 ms 14928 KB Output is correct
3 Correct 200 ms 14940 KB Output is correct
4 Correct 192 ms 14920 KB Output is correct
5 Correct 95 ms 15000 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 12888 KB Output is correct
2 Correct 54 ms 12876 KB Output is correct
3 Correct 55 ms 13072 KB Output is correct
4 Correct 25 ms 12880 KB Output is correct
5 Correct 2 ms 12888 KB Output is correct
6 Correct 28 ms 12880 KB Output is correct
7 Correct 40 ms 12880 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 12888 KB Output is correct
2 Correct 101 ms 12996 KB Output is correct
3 Correct 217 ms 15112 KB Output is correct
4 Correct 101 ms 15016 KB Output is correct
5 Correct 65 ms 12988 KB Output is correct
6 Correct 121 ms 15096 KB Output is correct
7 Correct 116 ms 14912 KB Output is correct
8 Correct 82 ms 12984 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12892 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12752 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12888 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12892 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 2 ms 12892 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 2 ms 12960 KB Output is correct
24 Correct 2 ms 12892 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 231 ms 15108 KB Output is correct
28 Correct 198 ms 14928 KB Output is correct
29 Correct 200 ms 14940 KB Output is correct
30 Correct 192 ms 14920 KB Output is correct
31 Correct 95 ms 15000 KB Output is correct
32 Correct 47 ms 12888 KB Output is correct
33 Correct 54 ms 12876 KB Output is correct
34 Correct 55 ms 13072 KB Output is correct
35 Correct 25 ms 12880 KB Output is correct
36 Correct 2 ms 12888 KB Output is correct
37 Correct 28 ms 12880 KB Output is correct
38 Correct 40 ms 12880 KB Output is correct
39 Correct 103 ms 12888 KB Output is correct
40 Correct 101 ms 12996 KB Output is correct
41 Correct 217 ms 15112 KB Output is correct
42 Correct 101 ms 15016 KB Output is correct
43 Correct 65 ms 12988 KB Output is correct
44 Correct 121 ms 15096 KB Output is correct
45 Correct 116 ms 14912 KB Output is correct
46 Correct 82 ms 12984 KB Output is correct
47 Correct 126 ms 13056 KB Output is correct
48 Correct 102 ms 13080 KB Output is correct
49 Correct 241 ms 15112 KB Output is correct
50 Correct 98 ms 14932 KB Output is correct
51 Correct 104 ms 14972 KB Output is correct
52 Correct 133 ms 15004 KB Output is correct
53 Correct 123 ms 14932 KB Output is correct
54 Correct 136 ms 14936 KB Output is correct
55 Correct 175 ms 15000 KB Output is correct