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답안 #295807

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
295807 2020-09-10T01:12:51 Z Gajowy 3단 점프 (JOI19_jumps) C++14
100 / 100
 1085 ms 107384 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define mp make_pair
#define eb emplace_back
#define pb push_back
#define e1 first
#define e2 second
#define int int_fast32_t
#define uint uint_fast64_t
#define ll int_fast64_t
#define ull uint_fast64_t
#define int16 int_fast16_t
#define uint16 uint_fast16_t
#define int32 int_fast32_t
#define uint32 uint_fast32_t
#define int64 int_fast64_t
#define uint64 uint_fast64_t
#define ld long double
#define float long double
#define size(x) (int)x.size()
#define satori int testCases; cin>>testCases; while(testCases--)
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define all(r) begin(r),end(r)
#define rall(r) rbegin(r),rend(r)
#define time chrono::high_resolution_clock().now().time_since_epoch().count()
#define elapsed(__begin,__end) (__end-__begin)/CLOCKS_PER_SEC
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
float pi=3.14159265358979323846;

const int MAXN=5e5+10,base=(1<<19),inf=1e9+2137;

int ans[MAXN],a[MAXN],b[base*2],c[base*2],bc[base*2];
vector<int> ud[MAXN],s;
vector<pair<int,int>> qr[MAXN];

void add(int u,int v)
{
	u+=base;
	while(u)
	{
		b[u]=max(b[u],v),u/=2;
		bc[u]=max({bc[u],bc[u*2],bc[u*2+1],b[u*2]+c[u*2+1]});
	}
}

pair<int,pair<int,int>> get(int l,int r,int u=1,int cl=0,int cr=base-1)
{
	if(cl>r||cr<l)
		return mp(-inf,mp(-inf,-inf));
	if(cl>=l&&cr<=r)
		return mp(bc[u],mp(b[u],c[u]));
	auto lo=get(l,r,u*2,cl,(cl+cr)/2),hi=get(l,r,u*2+1,(cl+cr)/2+1,cr);
	return mp(max({lo.e1,hi.e1,lo.e2.e1+hi.e2.e2}),mp(max(lo.e2.e1,hi.e2.e1),max(lo.e2.e2,hi.e2.e2)));
}

int32_t main()
{
	fastio;
	int n,q,l,r;
	cin>>n;
	for(int i=base;i<base*2;i++)
		c[i]=-inf;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		c[base+i]=a[i];
		while(size(s)&&a[s.back()]<a[i])
			ud[s.back()].eb(i),s.pop_back();
		if(size(s))
			ud[s.back()].eb(i);
		if(size(s)&&a[s.back()]==a[i])
			s.pop_back();
		s.eb(i);
	}
	cin>>q;
	for(int i=0;i<q;i++)
		cin>>l>>r,qr[l].eb(mp(r,i));
	for(int i=0;i<base*2;i++)
		b[i]=bc[i]=-inf;
	for(int i=base-1;i>=0;i--)
		c[i]=max(c[i*2],c[i*2+1]);
	for(int i=n;i>=1;i--)
	{
		for(auto xd:ud[i])
		{
			r=xd;
			if(r*2-i>n)
				continue;
			add(r*2-i-1,a[i]+a[r]);
		}
		for(auto xd:qr[i])
			ans[xd.e2]=get(i,xd.e1).e1;
	}
	for(int i=0;i<q;i++)
		cout<<ans[i]<<'\n';
}

Compilation message

jumps.cpp:2: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    2 | #pragma GCC optimization ("O3")
      | 
jumps.cpp:3: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 48504 KB Output is correct
2 Correct 32 ms 48632 KB Output is correct
3 Correct 32 ms 48504 KB Output is correct
4 Correct 32 ms 48640 KB Output is correct
5 Correct 32 ms 48504 KB Output is correct
6 Correct 32 ms 48504 KB Output is correct
7 Correct 31 ms 48512 KB Output is correct
8 Correct 32 ms 48512 KB Output is correct
9 Correct 32 ms 48504 KB Output is correct
10 Correct 32 ms 48504 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 48504 KB Output is correct
2 Correct 32 ms 48632 KB Output is correct
3 Correct 32 ms 48504 KB Output is correct
4 Correct 32 ms 48640 KB Output is correct
5 Correct 32 ms 48504 KB Output is correct
6 Correct 32 ms 48504 KB Output is correct
7 Correct 31 ms 48512 KB Output is correct
8 Correct 32 ms 48512 KB Output is correct
9 Correct 32 ms 48504 KB Output is correct
10 Correct 32 ms 48504 KB Output is correct
11 Correct 403 ms 74964 KB Output is correct
12 Correct 397 ms 74872 KB Output is correct
13 Correct 408 ms 75032 KB Output is correct
14 Correct 399 ms 74872 KB Output is correct
15 Correct 408 ms 74872 KB Output is correct
16 Correct 404 ms 74488 KB Output is correct
17 Correct 400 ms 74360 KB Output is correct
18 Correct 454 ms 74232 KB Output is correct
19 Correct 406 ms 74872 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 162 ms 59384 KB Output is correct
2 Correct 106 ms 57976 KB Output is correct
3 Correct 106 ms 59624 KB Output is correct
4 Correct 162 ms 59388 KB Output is correct
5 Correct 162 ms 59384 KB Output is correct
6 Correct 157 ms 58616 KB Output is correct
7 Correct 156 ms 58488 KB Output is correct
8 Correct 157 ms 58488 KB Output is correct
9 Correct 159 ms 58744 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 48504 KB Output is correct
2 Correct 32 ms 48632 KB Output is correct
3 Correct 32 ms 48504 KB Output is correct
4 Correct 32 ms 48640 KB Output is correct
5 Correct 32 ms 48504 KB Output is correct
6 Correct 32 ms 48504 KB Output is correct
7 Correct 31 ms 48512 KB Output is correct
8 Correct 32 ms 48512 KB Output is correct
9 Correct 32 ms 48504 KB Output is correct
10 Correct 32 ms 48504 KB Output is correct
11 Correct 403 ms 74964 KB Output is correct
12 Correct 397 ms 74872 KB Output is correct
13 Correct 408 ms 75032 KB Output is correct
14 Correct 399 ms 74872 KB Output is correct
15 Correct 408 ms 74872 KB Output is correct
16 Correct 404 ms 74488 KB Output is correct
17 Correct 400 ms 74360 KB Output is correct
18 Correct 454 ms 74232 KB Output is correct
19 Correct 406 ms 74872 KB Output is correct
20 Correct 162 ms 59384 KB Output is correct
21 Correct 106 ms 57976 KB Output is correct
22 Correct 106 ms 59624 KB Output is correct
23 Correct 162 ms 59388 KB Output is correct
24 Correct 162 ms 59384 KB Output is correct
25 Correct 157 ms 58616 KB Output is correct
26 Correct 156 ms 58488 KB Output is correct
27 Correct 157 ms 58488 KB Output is correct
28 Correct 159 ms 58744 KB Output is correct
29 Correct 1085 ms 104128 KB Output is correct
30 Correct 956 ms 100984 KB Output is correct
31 Correct 950 ms 104924 KB Output is correct
32 Correct 1062 ms 104288 KB Output is correct
33 Correct 1078 ms 104096 KB Output is correct
34 Correct 1063 ms 101752 KB Output is correct
35 Correct 1056 ms 101496 KB Output is correct
36 Correct 1059 ms 101752 KB Output is correct
37 Correct 1056 ms 102888 KB Output is correct
38 Correct 725 ms 106728 KB Output is correct
39 Correct 734 ms 106744 KB Output is correct
40 Correct 714 ms 103416 KB Output is correct
41 Correct 702 ms 103100 KB Output is correct
42 Correct 713 ms 103036 KB Output is correct
43 Correct 722 ms 104696 KB Output is correct
44 Correct 777 ms 107004 KB Output is correct
45 Correct 767 ms 107000 KB Output is correct
46 Correct 754 ms 103800 KB Output is correct
47 Correct 750 ms 103416 KB Output is correct
48 Correct 762 ms 103416 KB Output is correct
49 Correct 763 ms 105336 KB Output is correct
50 Correct 854 ms 107384 KB Output is correct
51 Correct 860 ms 107256 KB Output is correct
52 Correct 845 ms 104884 KB Output is correct
53 Correct 837 ms 104444 KB Output is correct
54 Correct 829 ms 104440 KB Output is correct
55 Correct 844 ms 105996 KB Output is correct