oj.uz

답안 #200106

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
200106 2020-02-05T11:20:35 Z gs18115 3단 점프 (JOI19_jumps) C++14
46 / 100
 2538 ms 138704 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define semicolon ;
#define ryan bear
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;
struct node
{
    ll am,bm,sm;
    node(ll x=-INF,ll y=-INF):am(x),bm(y),sm(x+y){}
    node(ll x,ll y,ll z):am(x),bm(y),sm(z){}
    node operator^(node x)
    {
        return node(max(am,x.am),max(bm,x.bm),max({sm,x.sm,bm+x.am}));
    }
};
ll a[500010],b[500010];
struct seg
{
    node t[2000010];
    void si(int n,int s,int e,int x)
    {
        if(s==e)
        {
            t[n]=node(a[s],b[s]);
            return;
        }
        int m=s+e>>1;
        if(x>m)
            si(n*2+1,m+1,e,x);
        else
            si(n*2,s,m,x);
        t[n]=t[n*2]^t[n*2+1];
        return;
    }
    node sq(int n,int s,int e,int S,int E)
    {
        if(s>E||S>e)
            return node();
        if(S<=s&&e<=E)
            return t[n];
        int m=s+e>>1;
        return sq(n*2,s,m,S,E)^sq(n*2+1,m+1,e,S,E);
    }
}st;
vector<pl>qv[500010];
vector<pi>av[500010];
ll ans[500010];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,q;
    cin>>n;
    for(int i=0;i++<n;)
        cin>>a[i],b[i]=-INF;
    vector<int>v;
    v.eb(n);
    for(int i=n;--i>0;)
    {
        while(!v.empty())
        {
            int j=v.back();
            if(2*j-i<=n)
                qv[i].eb(2*j-i,a[i]+a[j]);
            if(a[j]<=a[i])
                v.pop_back();
            else
                break;
        }
        v.eb(i);
    }
    cin>>q;
    for(int i=0;i<q;i++)
    {
        int l,r;
        cin>>l>>r;
        av[l].eb(r,i);
    }
    for(int i=n;i>0;i--)
    {
        for(pl&t:qv[i])
            if(b[t.fi]<t.se)
                b[t.fi]=t.se,st.si(1,1,n,t.fi);
        for(pi&t:av[i])
            ans[t.se]=st.sq(1,1,n,i+2,t.fi).sm;
    }
    for(int i=0;i<q;i++)
        cout<<ans[i]<<'\n';
    cout.flush();
    return 0;
}

Compilation message

jumps.cpp: In member function 'void seg::si(int, int, int, int)':
jumps.cpp:38:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int m=s+e>>1;
               ~^~
jumps.cpp: In member function 'node seg::sq(int, int, int, int, int)':
jumps.cpp:52:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int m=s+e>>1;
               ~^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 70776 KB Output is correct
2 Correct 41 ms 70776 KB Output is correct
3 Correct 39 ms 70776 KB Output is correct
4 Correct 39 ms 70852 KB Output is correct
5 Correct 39 ms 70904 KB Output is correct
6 Correct 39 ms 70780 KB Output is correct
7 Correct 39 ms 70848 KB Output is correct
8 Correct 39 ms 70776 KB Output is correct
9 Correct 42 ms 70856 KB Output is correct
10 Correct 41 ms 70776 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 70776 KB Output is correct
2 Correct 41 ms 70776 KB Output is correct
3 Correct 39 ms 70776 KB Output is correct
4 Correct 39 ms 70852 KB Output is correct
5 Correct 39 ms 70904 KB Output is correct
6 Correct 39 ms 70780 KB Output is correct
7 Correct 39 ms 70848 KB Output is correct
8 Correct 39 ms 70776 KB Output is correct
9 Correct 42 ms 70856 KB Output is correct
10 Correct 41 ms 70776 KB Output is correct
11 Correct 333 ms 91184 KB Output is correct
12 Correct 338 ms 91232 KB Output is correct
13 Correct 337 ms 91032 KB Output is correct
14 Correct 389 ms 91256 KB Output is correct
15 Correct 374 ms 91192 KB Output is correct
16 Correct 374 ms 90536 KB Output is correct
17 Correct 364 ms 90488 KB Output is correct
18 Correct 385 ms 90520 KB Output is correct
19 Correct 363 ms 91128 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 147 ms 85880 KB Output is correct
2 Correct 108 ms 82796 KB Output is correct
3 Correct 111 ms 81912 KB Output is correct
4 Correct 158 ms 86008 KB Output is correct
5 Correct 145 ms 85880 KB Output is correct
6 Correct 138 ms 85240 KB Output is correct
7 Correct 142 ms 85240 KB Output is correct
8 Correct 140 ms 85240 KB Output is correct
9 Correct 139 ms 85496 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 70776 KB Output is correct
2 Correct 41 ms 70776 KB Output is correct
3 Correct 39 ms 70776 KB Output is correct
4 Correct 39 ms 70852 KB Output is correct
5 Correct 39 ms 70904 KB Output is correct
6 Correct 39 ms 70780 KB Output is correct
7 Correct 39 ms 70848 KB Output is correct
8 Correct 39 ms 70776 KB Output is correct
9 Correct 42 ms 70856 KB Output is correct
10 Correct 41 ms 70776 KB Output is correct
11 Correct 333 ms 91184 KB Output is correct
12 Correct 338 ms 91232 KB Output is correct
13 Correct 337 ms 91032 KB Output is correct
14 Correct 389 ms 91256 KB Output is correct
15 Correct 374 ms 91192 KB Output is correct
16 Correct 374 ms 90536 KB Output is correct
17 Correct 364 ms 90488 KB Output is correct
18 Correct 385 ms 90520 KB Output is correct
19 Correct 363 ms 91128 KB Output is correct
20 Correct 147 ms 85880 KB Output is correct
21 Correct 108 ms 82796 KB Output is correct
22 Correct 111 ms 81912 KB Output is correct
23 Correct 158 ms 86008 KB Output is correct
24 Correct 145 ms 85880 KB Output is correct
25 Correct 138 ms 85240 KB Output is correct
26 Correct 142 ms 85240 KB Output is correct
27 Correct 140 ms 85240 KB Output is correct
28 Correct 139 ms 85496 KB Output is correct
29 Correct 1093 ms 133004 KB Output is correct
30 Correct 965 ms 124820 KB Output is correct
31 Correct 981 ms 122880 KB Output is correct
32 Correct 1109 ms 133060 KB Output is correct
33 Correct 1093 ms 133112 KB Output is correct
34 Correct 1439 ms 131852 KB Output is correct
35 Correct 1185 ms 131576 KB Output is correct
36 Correct 1333 ms 131624 KB Output is correct
37 Correct 2538 ms 132984 KB Output is correct
38 Correct 771 ms 138656 KB Output is correct
39 Correct 1234 ms 138704 KB Output is correct
40 Correct 1044 ms 136568 KB Output is correct
41 Execution timed out 284 ms 118696 KB Time limit exceeded (wall clock)
42 Halted 0 ms 0 KB -