oj.uz

답안 #863509

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
863509 2023-10-20T13:25:26 Z letterc67 Bigger segments (IZhO19_segments) C++14
100 / 100
 113 ms 36448 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define sc second
#define pll pair<ll,ll>
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
const ll nmax = 5e5+6;
const ll inf = 1e18;
ll a[nmax];
ll pref[nmax];
ll n;
struct segtre{
	ll st[nmax * 4];
	void init(int n){
		for(int i = 1;i<=4*n;i++) st[i] = inf;
	}
	void update(int id,int l,int r,int i,ll x){
		if(i>r ||i <l) return;
		if(l==r) {
			st[id] = x;
			return;
		}
		int mid = (l+r)/2;
		update(id*2,l,mid,i,x);
		update(id*2+1,mid+1,r,i,x);
		st[id] = min(st[id*2],st[id*2+1]);
	}
	ll walk(int id,int l,int r,ll x){
		if (l==r) return l ;
		int mid = (l+r)/2;
		if(st[id*2] <= x) return walk(id*2,l,mid,x);
		return walk(id*2+1,mid+1,r,x);
	}
} tree;
ll dp[nmax];
ll f[nmax];
void solve(){
    cin >> n;
    for(int i = 1;i<=n;i++){
    	cin >> a[i];
    	// pref[i] = pref[i-1] + a[i];
    }
  reverse(a + 1, a + n + 1);
    tree.init(n+1);
    tree.update(1,1,n+1,n+1,0);
    for(int i = n;i>=1;i--){
    	pref[i] = pref[i+1] + a[i];
    	int get = tree.walk(1,1,n+1,pref[i]);
    	// cout << get << '\n';
    	f[i] = pref[i] - pref[get];
    	dp[i] = dp[get] + 1;
    	tree.update(1,1,n+1,i,f[i] + pref[i]);
    }
    // cout << f[2];
    cout << dp[1];
}

int main(){
    ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    solve();
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6560 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6560 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6616 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 1 ms 6492 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6560 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6616 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 1 ms 6492 KB Output is correct
31 Correct 1 ms 6492 KB Output is correct
32 Correct 2 ms 6628 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 1 ms 6492 KB Output is correct
35 Correct 2 ms 6488 KB Output is correct
36 Correct 1 ms 6744 KB Output is correct
37 Correct 1 ms 6492 KB Output is correct
38 Correct 1 ms 6496 KB Output is correct
39 Correct 1 ms 6496 KB Output is correct
40 Correct 1 ms 6492 KB Output is correct
41 Correct 1 ms 6496 KB Output is correct
42 Correct 1 ms 6500 KB Output is correct
43 Correct 2 ms 6628 KB Output is correct
44 Correct 2 ms 6492 KB Output is correct
45 Correct 1 ms 6496 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6560 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6616 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 1 ms 6492 KB Output is correct
31 Correct 1 ms 6492 KB Output is correct
32 Correct 2 ms 6628 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 1 ms 6492 KB Output is correct
35 Correct 2 ms 6488 KB Output is correct
36 Correct 1 ms 6744 KB Output is correct
37 Correct 1 ms 6492 KB Output is correct
38 Correct 1 ms 6496 KB Output is correct
39 Correct 1 ms 6496 KB Output is correct
40 Correct 1 ms 6492 KB Output is correct
41 Correct 1 ms 6496 KB Output is correct
42 Correct 1 ms 6500 KB Output is correct
43 Correct 2 ms 6628 KB Output is correct
44 Correct 2 ms 6492 KB Output is correct
45 Correct 1 ms 6496 KB Output is correct
46 Correct 18 ms 15712 KB Output is correct
47 Correct 19 ms 15712 KB Output is correct
48 Correct 20 ms 16032 KB Output is correct
49 Correct 21 ms 16224 KB Output is correct
50 Correct 22 ms 16224 KB Output is correct
51 Correct 22 ms 16216 KB Output is correct
52 Correct 11 ms 13404 KB Output is correct
53 Correct 8 ms 11356 KB Output is correct
54 Correct 19 ms 15536 KB Output is correct
55 Correct 22 ms 16208 KB Output is correct
56 Correct 20 ms 15704 KB Output is correct
57 Correct 19 ms 15704 KB Output is correct
58 Correct 19 ms 15708 KB Output is correct
59 Correct 20 ms 15952 KB Output is correct
60 Correct 20 ms 15960 KB Output is correct

Subtask #5
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6560 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6616 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 1 ms 6492 KB Output is correct
31 Correct 1 ms 6492 KB Output is correct
32 Correct 2 ms 6628 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 1 ms 6492 KB Output is correct
35 Correct 2 ms 6488 KB Output is correct
36 Correct 1 ms 6744 KB Output is correct
37 Correct 1 ms 6492 KB Output is correct
38 Correct 1 ms 6496 KB Output is correct
39 Correct 1 ms 6496 KB Output is correct
40 Correct 1 ms 6492 KB Output is correct
41 Correct 1 ms 6496 KB Output is correct
42 Correct 1 ms 6500 KB Output is correct
43 Correct 2 ms 6628 KB Output is correct
44 Correct 2 ms 6492 KB Output is correct
45 Correct 1 ms 6496 KB Output is correct
46 Correct 18 ms 15712 KB Output is correct
47 Correct 19 ms 15712 KB Output is correct
48 Correct 20 ms 16032 KB Output is correct
49 Correct 21 ms 16224 KB Output is correct
50 Correct 22 ms 16224 KB Output is correct
51 Correct 22 ms 16216 KB Output is correct
52 Correct 11 ms 13404 KB Output is correct
53 Correct 8 ms 11356 KB Output is correct
54 Correct 19 ms 15536 KB Output is correct
55 Correct 22 ms 16208 KB Output is correct
56 Correct 20 ms 15704 KB Output is correct
57 Correct 19 ms 15704 KB Output is correct
58 Correct 19 ms 15708 KB Output is correct
59 Correct 20 ms 15952 KB Output is correct
60 Correct 20 ms 15960 KB Output is correct
61 Correct 101 ms 33532 KB Output is correct
62 Correct 94 ms 33496 KB Output is correct
63 Correct 96 ms 33872 KB Output is correct
64 Correct 108 ms 36104 KB Output is correct
65 Correct 112 ms 36448 KB Output is correct
66 Correct 108 ms 36432 KB Output is correct
67 Correct 87 ms 32852 KB Output is correct
68 Correct 45 ms 22356 KB Output is correct
69 Correct 98 ms 32612 KB Output is correct
70 Correct 111 ms 36432 KB Output is correct
71 Correct 95 ms 33524 KB Output is correct
72 Correct 94 ms 34000 KB Output is correct
73 Correct 98 ms 34508 KB Output is correct
74 Correct 113 ms 35008 KB Output is correct
75 Correct 106 ms 34896 KB Output is correct