oj.uz

답안 #145582

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
145582 2019-08-20T12:30:56 Z 2fat2code 3단 점프 (JOI19_jumps) C++14
46 / 100
 550 ms 38648 KB 
#include <bits/stdc++.h>
#define ll long long
#define all(a) (a).begin(), (a).end()
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define sz() size()
#define fr first
#define sc second
#define pb push_back
#define er erase
#define in insert
#define pi pair<int,int>
#define pii pair<pair<int,int>,int>
#define mp make_pair
#define int long long
#define rc(s) return cout<<s,0
#define rcc(s) cout<<s,exit(0)
///#define cin fin
///#define cout fout
using namespace std;


//ofstream fout("file.out");

const int nmax=1e3+5;
const int mod=1e9+7;
const int mod1=998244353;



int n,a[200005],q,l,r,curr,pop,lazy[2000005];
vector<pair<int,int>>par;
vector<pair<pair<int,int>,int>>que;
vector<pair<int,int>>ans;
pair<int,int>tree[2000005];
stack<int>st;

void createsegtree(int l,int r,int indx){
    if(l==r) tree[indx].sc = a[l];
    else{
        int mid = l+(r-l)/2;
        createsegtree(l,mid,2*indx);
        createsegtree(mid+1,r,2*indx+1);
        tree[indx].sc = max(tree[2*indx].sc,tree[2*indx+1].sc);
    }
}

void update(int rangeleft,int rangeright,int val,int lef,int rig,int indx){
    if(lazy[indx]!=0){
        tree[indx].fr=max(tree[indx].fr,lazy[indx]+tree[indx].sc);
        if(lef!=rig){
            lazy[2*indx]=max(lazy[2*indx],lazy[indx]);
            lazy[2*indx+1]=max(lazy[2*indx+1],lazy[indx]);
        }
        lazy[indx]=0;
    }
    if(lef>rangeright || rig<rangeleft) return;
    else if(rangeleft<=lef && rangeright>=rig){
        tree[indx].fr=max(tree[indx].fr,val+tree[indx].sc);
        if(lef!=rig){
            lazy[2*indx]=max(lazy[2*indx],val);
            lazy[2*indx+1]=max(lazy[2*indx+1],val);
        }
    }
    else{
        int mid=lef+(rig-lef)/2;
        update(rangeleft,rangeright,val,lef,mid,2*indx);
        update(rangeleft,rangeright,val,mid+1,rig,2*indx+1);
        tree[indx].fr=max(tree[2*indx].fr,tree[2*indx+1].fr);
    }
}

int check(int rangeleft,int rangeright,int lef,int rig,int indx){
    if(lazy[indx]!=0){
        tree[indx].fr=max(tree[indx].fr,lazy[indx]+tree[indx].sc);
        if(lef!=rig){
            lazy[2*indx]=max(lazy[2*indx],lazy[indx]);
            lazy[2*indx+1]=max(lazy[2*indx+1],lazy[indx]);
        }
        lazy[indx]=0;
    }
    if(rangeright<lef || rangeleft>rig) return 0;
    else if(rangeleft<=lef && rangeright>=rig){
        return tree[indx].fr;
    }
    else{
        int mid=lef+(rig-lef)/2;
        return max(check(rangeleft,rangeright,lef,mid,2*indx),check(rangeleft,rangeright,mid+1,rig,2*indx+1));
    }
}

int32_t main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin >> n;
	for(int i=1;i<=n;i++) cin >> a[i];
	cin >> q;
	for(int i=1;i<=q;i++){
        cin >> l >> r;
        que.push_back({{l,r},i});
	}
	sort(all(que));
	for(int i=1;i<n;i++){
        while(!st.empty() && a[st.top()]<=a[i]){
            par.push_back({st.top(),i});
            st.pop();
        }
        if(!st.empty()){
            par.push_back({st.top(),i});
        }
        st.push(i);
	}
    createsegtree(1,n,1);
    sort(all(par));
    curr=par.size()-1,pop=que.size()-1;
    for(int i=n-2;i>=1;i--){
        while(curr>=0 && par[curr].fr==i){
            update(2*par[curr].sc-par[curr].fr,n,a[par[curr].fr]+a[par[curr].sc],1,n,1);
            curr--;
        }
        while(pop>=0 && que[pop].fr.fr==i){
            ans.push_back({que[pop].sc,check(que[pop].fr.fr,que[pop].fr.sc,1,n,1)});
            pop--;
        }
    }
    sort(all(ans));
    for(int i=0;i<ans.size();i++){
        cout << ans[i].sc << '\n';
    }
}

Compilation message

jumps.cpp: In function 'int32_t main()':
jumps.cpp:127:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<ans.size();i++){
                 ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 435 ms 38452 KB Output is correct
12 Correct 424 ms 38568 KB Output is correct
13 Correct 427 ms 38472 KB Output is correct
14 Correct 430 ms 38596 KB Output is correct
15 Correct 423 ms 38648 KB Output is correct
16 Correct 430 ms 37832 KB Output is correct
17 Correct 428 ms 37832 KB Output is correct
18 Correct 430 ms 37880 KB Output is correct
19 Correct 430 ms 38344 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 181 ms 22356 KB Output is correct
2 Correct 100 ms 19168 KB Output is correct
3 Correct 102 ms 20772 KB Output is correct
4 Correct 182 ms 22352 KB Output is correct
5 Correct 183 ms 22396 KB Output is correct
6 Correct 175 ms 21792 KB Output is correct
7 Correct 176 ms 21716 KB Output is correct
8 Correct 173 ms 21588 KB Output is correct
9 Correct 177 ms 21976 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 435 ms 38452 KB Output is correct
12 Correct 424 ms 38568 KB Output is correct
13 Correct 427 ms 38472 KB Output is correct
14 Correct 430 ms 38596 KB Output is correct
15 Correct 423 ms 38648 KB Output is correct
16 Correct 430 ms 37832 KB Output is correct
17 Correct 428 ms 37832 KB Output is correct
18 Correct 430 ms 37880 KB Output is correct
19 Correct 430 ms 38344 KB Output is correct
20 Correct 181 ms 22356 KB Output is correct
21 Correct 100 ms 19168 KB Output is correct
22 Correct 102 ms 20772 KB Output is correct
23 Correct 182 ms 22352 KB Output is correct
24 Correct 183 ms 22396 KB Output is correct
25 Correct 175 ms 21792 KB Output is correct
26 Correct 176 ms 21716 KB Output is correct
27 Correct 173 ms 21588 KB Output is correct
28 Correct 177 ms 21976 KB Output is correct
29 Runtime error 550 ms 18756 KB Execution killed with signal 11 (could be triggered by violating memory limits)
30 Halted 0 ms 0 KB -