답안 #1074825

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1074825	2024-08-25T14:46:54 Z	dosts	Global Warming (CEOI18_glo)	C++17	48 / 100	2000 ms	262144 KB

//Dost SEFEROĞLU
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " <<    
#define all(cont) cont.begin(),cont.end()
#define vi vector<int>
const int MOD = 1e9+7,inf = 2e12;
const int N = 5001;
vi vv;

int idx(int x) {
    return upper_bound(all(vv),x)-vv.begin();
}

struct FT{
    int n;
    vi bit;

    FT(int nn) {
        n = nn;
        bit.assign(nn+1,0);
    }

    void put(int p,int v) {
        for (int i=p;i<=n;i+=i&-i) bit[i]=max(bit[i],v);
    } 

    int get(int p) {
        int ans = 0;
        for (int i=p;i>0;i-=i&-i) ans=max(ans,bit[i]);
        return ans;
    }
    void reset() {
        bit.assign(n+1,0);
    }
};

struct ST {
    vector<multiset<int,greater<int>>> t;

    ST(int nn) {
        t.resize(4*nn+1);
    }

    void insert(int node,int l,int r,int p,int v) {
        t[node].insert(v);
        if (l == r) return;
        int m = (l+r) >> 1;
        if (p<=m) insert(2*node,l,m,p,v);
        else insert(2*node+1,m+1,r,p,v);
    }
    void erase(int node,int l,int r,int p,int v) {
        t[node].erase(t[node].find(v));
        if (l == r) return;
        int m = (l+r) >> 1;
        if (p<=m) erase(2*node,l,m,p,v);
        else erase(2*node+1,m+1,r,p,v);   
    }
    int query(int node,int l,int r,int L,int R) {
        if (l > R || r < L) return 0;
        if (l >= L && r<=R) {
            if (t[node].empty()) return 0;
            return *t[node].begin();
        }
        int m = (l+r) >> 1;
        return max(query(2*node,l,m,L,R),query(2*node+1,m+1,r,L,R));
    }
};
void solve() { 
    int n,x;
    cin >> n >> x;
    //corollary: always decrease some prefix
    //corollary: if you decrease 1..i you MUST use i.
    vi a(n+1);
    for (int i=1;i<=n;i++) cin >> a[i];
    for (int i=1;i<=n;i++) {
        vv.push_back(a[i]);
        vv.push_back(a[i]-x);
    }
    sort(all(vv));
    vv.erase(unique(all(vv)),vv.end());
    int sz = vv.size();
    FT ft(sz);
    vi p(n+1),s(n+1);
    for (int i=1;i<=n;i++) {
        p[i] = ft.get(idx(a[i])-1)+1;
        ft.put(idx(a[i]),p[i]);
    }
    ft.reset();
    for (int i=n;i>=1;i--) {
        s[i] = ft.get(sz-idx(a[i]))+1;
        ft.put(sz-idx(a[i])+1,s[i]);
    }
    ft.reset();
    int ans = 0;
    ST st(sz);
    for (int i=1;i<=n;i++) st.insert(1,1,sz,idx(a[i]),s[i]);
    for (int i=1;i<=n;i++) {
        st.erase(1,1,sz,idx(a[i]),s[i]);
        ans = max(ans,p[i]+st.query(1,1,sz,idx(a[i]-x)+1,sz));
    }
    cout << ans << endl;
}
 
signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Dodi
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t; 
    while (t --> 0) solve();
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	344 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct

Subtask #3
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	344 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	3 ms	1368 KB	Output is correct
20	Correct	3 ms	1372 KB	Output is correct
21	Correct	3 ms	1372 KB	Output is correct
22	Correct	3 ms	1116 KB	Output is correct
23	Correct	3 ms	1144 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

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	2092 ms	222816 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	396 ms	63436 KB	Output is correct
2	Correct	370 ms	63524 KB	Output is correct
3	Correct	394 ms	63492 KB	Output is correct
4	Correct	194 ms	51556 KB	Output is correct
5	Correct	0 ms	456 KB	Output is correct
6	Correct	125 ms	51664 KB	Output is correct
7	Correct	243 ms	59996 KB	Output is correct

Subtask #6
0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	983 ms	131116 KB	Output is correct
2	Correct	983 ms	132088 KB	Output is correct
3	Runtime error	1357 ms	262144 KB	Execution killed with signal 9
4	Halted	0 ms	0 KB	-

Subtask #7
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	344 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	3 ms	1368 KB	Output is correct
20	Correct	3 ms	1372 KB	Output is correct
21	Correct	3 ms	1372 KB	Output is correct
22	Correct	3 ms	1116 KB	Output is correct
23	Correct	3 ms	1144 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	Execution timed out	2092 ms	222816 KB	Time limit exceeded
28	Halted	0 ms	0 KB	-

답안 #1074825

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 13.0 / 13.0

Subtask #4 0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 0 / 17.0

Subtask #7 0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
13.0 / 13.0

Subtask #4
0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
0 / 17.0

Subtask #7
0 / 25.0