oj.uz

답안 #529178

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
529178 2022-02-22T10:59:06 Z Fake4Fun 3단 점프 (JOI19_jumps) C++14
100 / 100
 922 ms 98976 KB 
#include<iostream>
#include<vector>
#define pa pair<int,int>
#define fi first
#define se second
using namespace std;
using ui=unsigned int;
const int N=5e5+5;
int n,q;
int a[N],p[N];
vector<int> wait[N];
vector<pa> que[N];
int xl[N<<2],xr[N<<2];
bool ok[N<<2];
ui IT[N<<2],ma[N<<2],ans[N];
int lazy[N<<2];
void build(int x=1,int l=1,int r=n){
    xl[x]=l, xr[x]=r;
    if(l==r){ma[x]=a[l]; return;}
    int xm=(l+r)>>1;
    build(x<<1,l,xm); build(x<<1|1,xm+1,r);
    ma[x]=max(ma[x<<1],ma[x<<1|1]);
}
void fix(int x,int C){
    if(C<=lazy[x]) return;
    ok[x]=1, lazy[x]=C;
    IT[x]=max(IT[x],ma[x]+C);
}
void down(int x){
    for(int i=x<<1;i<=(x<<1|1);i++)
        fix(i,lazy[x]);
    ok[x]=0;
}
void update(int L,int C,int x=1){
    if(C<=lazy[x]) return;
    if(L<=xl[x]){fix(x,C); return;}
    if(ok[x]) down(x);
    if(xr[x<<1]>=L) update(L,C,x<<1);
    update(L,C,x<<1|1);
    IT[x]=max(IT[x<<1],IT[x<<1|1]);
}
ui query(int L,int R,int x=1){
    if(xr[x]<L||R<xl[x]) return 0;
    if(L<=xl[x]&&xr[x]<=R) return IT[x];
    if(ok[x]) down(x);
    return max(query(L,R,x<<1),query(L,R,x<<1|1));
}
int main(){
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
//    freopen("tripos.inp","r",stdin);
//    freopen("tripos.out","w",stdout);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i]; p[i]=i-1;
        while(p[i]&&a[p[i]]<a[i]) p[i]=p[p[i]];
        if(p[i]) wait[p[i]].push_back(i);
    }
    for(int i=n;i>=1;i--){
        p[i]=i+1;
        while(p[i]<=n&&a[p[i]]<a[i]) p[i]=p[p[i]];
        if(p[i]<=n&&a[i]<a[p[i]]) wait[i].push_back(p[i]);
    }
    build();
    cin>>q;
    int l,r;
    for(int i=1;i<=q;i++){
        cin>>l>>r;
        que[l].emplace_back(r,i);
    }
    for(int i=n;i>=1;i--){
        for(auto j:wait[i])
            if(2*j-i<=n) update(2*j-i,a[i]+a[j]);
        for(auto x:que[i]) ans[x.se]=query(i,x.fi);
    }
    for(int i=1;i<=q;i++) cout<<ans[i]<<'\n';
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23812 KB Output is correct
2 Correct 13 ms 23884 KB Output is correct
3 Correct 13 ms 23840 KB Output is correct
4 Correct 15 ms 23780 KB Output is correct
5 Correct 14 ms 23772 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 13 ms 23828 KB Output is correct
8 Correct 14 ms 23884 KB Output is correct
9 Correct 15 ms 23824 KB Output is correct
10 Correct 13 ms 23784 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23812 KB Output is correct
2 Correct 13 ms 23884 KB Output is correct
3 Correct 13 ms 23840 KB Output is correct
4 Correct 15 ms 23780 KB Output is correct
5 Correct 14 ms 23772 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 13 ms 23828 KB Output is correct
8 Correct 14 ms 23884 KB Output is correct
9 Correct 15 ms 23824 KB Output is correct
10 Correct 13 ms 23784 KB Output is correct
11 Correct 287 ms 42964 KB Output is correct
12 Correct 234 ms 42852 KB Output is correct
13 Correct 248 ms 42892 KB Output is correct
14 Correct 310 ms 42988 KB Output is correct
15 Correct 272 ms 43012 KB Output is correct
16 Correct 251 ms 42276 KB Output is correct
17 Correct 270 ms 42300 KB Output is correct
18 Correct 275 ms 42188 KB Output is correct
19 Correct 254 ms 42872 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 124 ms 44296 KB Output is correct
2 Correct 81 ms 44180 KB Output is correct
3 Correct 79 ms 44080 KB Output is correct
4 Correct 140 ms 44344 KB Output is correct
5 Correct 126 ms 44312 KB Output is correct
6 Correct 130 ms 43680 KB Output is correct
7 Correct 129 ms 43580 KB Output is correct
8 Correct 117 ms 43648 KB Output is correct
9 Correct 123 ms 43972 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 23812 KB Output is correct
2 Correct 13 ms 23884 KB Output is correct
3 Correct 13 ms 23840 KB Output is correct
4 Correct 15 ms 23780 KB Output is correct
5 Correct 14 ms 23772 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 13 ms 23828 KB Output is correct
8 Correct 14 ms 23884 KB Output is correct
9 Correct 15 ms 23824 KB Output is correct
10 Correct 13 ms 23784 KB Output is correct
11 Correct 287 ms 42964 KB Output is correct
12 Correct 234 ms 42852 KB Output is correct
13 Correct 248 ms 42892 KB Output is correct
14 Correct 310 ms 42988 KB Output is correct
15 Correct 272 ms 43012 KB Output is correct
16 Correct 251 ms 42276 KB Output is correct
17 Correct 270 ms 42300 KB Output is correct
18 Correct 275 ms 42188 KB Output is correct
19 Correct 254 ms 42872 KB Output is correct
20 Correct 124 ms 44296 KB Output is correct
21 Correct 81 ms 44180 KB Output is correct
22 Correct 79 ms 44080 KB Output is correct
23 Correct 140 ms 44344 KB Output is correct
24 Correct 126 ms 44312 KB Output is correct
25 Correct 130 ms 43680 KB Output is correct
26 Correct 129 ms 43580 KB Output is correct
27 Correct 117 ms 43648 KB Output is correct
28 Correct 123 ms 43972 KB Output is correct
29 Correct 922 ms 93236 KB Output is correct
30 Correct 784 ms 92736 KB Output is correct
31 Correct 763 ms 92748 KB Output is correct
32 Correct 895 ms 93292 KB Output is correct
33 Correct 851 ms 93264 KB Output is correct
34 Correct 814 ms 90952 KB Output is correct
35 Correct 854 ms 90976 KB Output is correct
36 Correct 832 ms 90736 KB Output is correct
37 Correct 857 ms 92100 KB Output is correct
38 Correct 566 ms 98976 KB Output is correct
39 Correct 615 ms 98920 KB Output is correct
40 Correct 553 ms 95656 KB Output is correct
41 Correct 539 ms 95116 KB Output is correct
42 Correct 583 ms 95140 KB Output is correct
43 Correct 561 ms 96900 KB Output is correct
44 Correct 599 ms 98396 KB Output is correct
45 Correct 607 ms 98472 KB Output is correct
46 Correct 587 ms 95320 KB Output is correct
47 Correct 607 ms 94732 KB Output is correct
48 Correct 581 ms 94812 KB Output is correct
49 Correct 599 ms 96856 KB Output is correct
50 Correct 711 ms 96536 KB Output is correct
51 Correct 702 ms 96488 KB Output is correct
52 Correct 666 ms 94032 KB Output is correct
53 Correct 654 ms 93700 KB Output is correct
54 Correct 657 ms 93700 KB Output is correct
55 Correct 647 ms 95412 KB Output is correct