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Submission #268614

# Submission time Handle Problem Language Result Execution time Memory
268614 2020-08-16T14:11:47 Z Osama_Alkhodairy Bigger segments (IZhO19_segments) C++17
37 / 100
 1500 ms 17132 KB 
#include <bits/stdc++.h>
using namespace std;
#define finish(x) return cout << x << endl, 0
#define ll long long

const int N = 500001;
const ll INF = 1e18;

int n;
vector <int> a;
ll dp[N], tree[4 * N], lazy[4 * N];

void push(int l, int r, int node){
    tree[node] += lazy[node];
    if(l != r){
        lazy[2 * node] += lazy[node];
        lazy[2 * node + 1] += lazy[node];
    }
    lazy[node] = 0;
}
void update(int l, int r, int node, int s, int e, ll v){
    if(r < l) return;
    push(l, r, node);
    if(r < s || l > e) return;
    if(s <= l && r <= e){
        lazy[node] += v;
        push(l, r, node);
        return;
    }
    int mid = (l + r) / 2;
    update(l, mid, 2 * node, s, e, v);
    update(mid + 1, r, 2 * node + 1, s, e, v);
    tree[node] = min(tree[2 * node], tree[2 * node + 1]);
}
int query(int l, int r, int node, int p){
    if(r < l || l > p) return -1;
    push(l, r, node);
    if(r <= p && tree[node] > 0) return -1;
    if(l == r) return l;
    int mid = (l + r) / 2;
    int ret = query(mid + 1, r, 2 * node + 1, p);
    if(ret != -1) return ret;
    return query(l, mid, 2 * node, p);
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    for(int i = 0 ; i < 4 * N ; i++){
        tree[i] = INF;
    }
    cin >> n;
    a.resize(n + 1);
    for(int i = 1 ; i <= n ; i++){
        cin >> a[i];
    }
    for(int i = 1 ; i <= n ; i++){
        ll sum = 0;
        for(int j = i ; j >= 1 ; j--){
            sum += a[j];
            if(sum >= dp[j - 1]){
                dp[i] = sum;
                break;
            }
        }
    }
    update(0, n, 1, 0, 0, -INF);
    vector <int> ans(n + 1);
    for(int i = 1 ; i <= n ; i++){
        update(0, n, 1, 0, i - 1, -a[i]);
        int idx = query(0, n, 1, i - 1);
        ans[i] = ans[idx] + 1;
        update(0, n, 1, i, i, -INF + dp[i]);
    }
    cout << ans[n] << endl;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16000 KB Output is correct
2 Correct 9 ms 16000 KB Output is correct
3 Correct 9 ms 16000 KB Output is correct
4 Correct 8 ms 16000 KB Output is correct
5 Correct 9 ms 16000 KB Output is correct
6 Correct 9 ms 16000 KB Output is correct
7 Correct 9 ms 16000 KB Output is correct
8 Correct 9 ms 16000 KB Output is correct
9 Correct 8 ms 16000 KB Output is correct
10 Correct 9 ms 16000 KB Output is correct
11 Correct 9 ms 16000 KB Output is correct
12 Correct 9 ms 16032 KB Output is correct
13 Correct 9 ms 16000 KB Output is correct
14 Correct 9 ms 16000 KB Output is correct
15 Correct 9 ms 16000 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16000 KB Output is correct
2 Correct 9 ms 16000 KB Output is correct
3 Correct 9 ms 16000 KB Output is correct
4 Correct 8 ms 16000 KB Output is correct
5 Correct 9 ms 16000 KB Output is correct
6 Correct 9 ms 16000 KB Output is correct
7 Correct 9 ms 16000 KB Output is correct
8 Correct 9 ms 16000 KB Output is correct
9 Correct 8 ms 16000 KB Output is correct
10 Correct 9 ms 16000 KB Output is correct
11 Correct 9 ms 16000 KB Output is correct
12 Correct 9 ms 16032 KB Output is correct
13 Correct 9 ms 16000 KB Output is correct
14 Correct 9 ms 16000 KB Output is correct
15 Correct 9 ms 16000 KB Output is correct
16 Correct 9 ms 16000 KB Output is correct
17 Correct 9 ms 16000 KB Output is correct
18 Correct 9 ms 16000 KB Output is correct
19 Correct 9 ms 16000 KB Output is correct
20 Correct 10 ms 16000 KB Output is correct
21 Correct 10 ms 16128 KB Output is correct
22 Correct 9 ms 16000 KB Output is correct
23 Correct 9 ms 16128 KB Output is correct
24 Correct 9 ms 16000 KB Output is correct
25 Correct 9 ms 16000 KB Output is correct
26 Correct 9 ms 16000 KB Output is correct
27 Correct 9 ms 16000 KB Output is correct
28 Correct 9 ms 16000 KB Output is correct
29 Correct 9 ms 16000 KB Output is correct
30 Correct 9 ms 16000 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16000 KB Output is correct
2 Correct 9 ms 16000 KB Output is correct
3 Correct 9 ms 16000 KB Output is correct
4 Correct 8 ms 16000 KB Output is correct
5 Correct 9 ms 16000 KB Output is correct
6 Correct 9 ms 16000 KB Output is correct
7 Correct 9 ms 16000 KB Output is correct
8 Correct 9 ms 16000 KB Output is correct
9 Correct 8 ms 16000 KB Output is correct
10 Correct 9 ms 16000 KB Output is correct
11 Correct 9 ms 16000 KB Output is correct
12 Correct 9 ms 16032 KB Output is correct
13 Correct 9 ms 16000 KB Output is correct
14 Correct 9 ms 16000 KB Output is correct
15 Correct 9 ms 16000 KB Output is correct
16 Correct 9 ms 16000 KB Output is correct
17 Correct 9 ms 16000 KB Output is correct
18 Correct 9 ms 16000 KB Output is correct
19 Correct 9 ms 16000 KB Output is correct
20 Correct 10 ms 16000 KB Output is correct
21 Correct 10 ms 16128 KB Output is correct
22 Correct 9 ms 16000 KB Output is correct
23 Correct 9 ms 16128 KB Output is correct
24 Correct 9 ms 16000 KB Output is correct
25 Correct 9 ms 16000 KB Output is correct
26 Correct 9 ms 16000 KB Output is correct
27 Correct 9 ms 16000 KB Output is correct
28 Correct 9 ms 16000 KB Output is correct
29 Correct 9 ms 16000 KB Output is correct
30 Correct 9 ms 16000 KB Output is correct
31 Correct 14 ms 16172 KB Output is correct
32 Correct 12 ms 16156 KB Output is correct
33 Correct 11 ms 16128 KB Output is correct
34 Correct 11 ms 16128 KB Output is correct
35 Correct 11 ms 16128 KB Output is correct
36 Correct 12 ms 16128 KB Output is correct
37 Correct 11 ms 16128 KB Output is correct
38 Correct 10 ms 16000 KB Output is correct
39 Correct 11 ms 16128 KB Output is correct
40 Correct 11 ms 16128 KB Output is correct
41 Correct 11 ms 16128 KB Output is correct
42 Correct 11 ms 16128 KB Output is correct
43 Correct 11 ms 16128 KB Output is correct
44 Correct 10 ms 16128 KB Output is correct
45 Correct 11 ms 16128 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16000 KB Output is correct
2 Correct 9 ms 16000 KB Output is correct
3 Correct 9 ms 16000 KB Output is correct
4 Correct 8 ms 16000 KB Output is correct
5 Correct 9 ms 16000 KB Output is correct
6 Correct 9 ms 16000 KB Output is correct
7 Correct 9 ms 16000 KB Output is correct
8 Correct 9 ms 16000 KB Output is correct
9 Correct 8 ms 16000 KB Output is correct
10 Correct 9 ms 16000 KB Output is correct
11 Correct 9 ms 16000 KB Output is correct
12 Correct 9 ms 16032 KB Output is correct
13 Correct 9 ms 16000 KB Output is correct
14 Correct 9 ms 16000 KB Output is correct
15 Correct 9 ms 16000 KB Output is correct
16 Correct 9 ms 16000 KB Output is correct
17 Correct 9 ms 16000 KB Output is correct
18 Correct 9 ms 16000 KB Output is correct
19 Correct 9 ms 16000 KB Output is correct
20 Correct 10 ms 16000 KB Output is correct
21 Correct 10 ms 16128 KB Output is correct
22 Correct 9 ms 16000 KB Output is correct
23 Correct 9 ms 16128 KB Output is correct
24 Correct 9 ms 16000 KB Output is correct
25 Correct 9 ms 16000 KB Output is correct
26 Correct 9 ms 16000 KB Output is correct
27 Correct 9 ms 16000 KB Output is correct
28 Correct 9 ms 16000 KB Output is correct
29 Correct 9 ms 16000 KB Output is correct
30 Correct 9 ms 16000 KB Output is correct
31 Correct 14 ms 16172 KB Output is correct
32 Correct 12 ms 16156 KB Output is correct
33 Correct 11 ms 16128 KB Output is correct
34 Correct 11 ms 16128 KB Output is correct
35 Correct 11 ms 16128 KB Output is correct
36 Correct 12 ms 16128 KB Output is correct
37 Correct 11 ms 16128 KB Output is correct
38 Correct 10 ms 16000 KB Output is correct
39 Correct 11 ms 16128 KB Output is correct
40 Correct 11 ms 16128 KB Output is correct
41 Correct 11 ms 16128 KB Output is correct
42 Correct 11 ms 16128 KB Output is correct
43 Correct 11 ms 16128 KB Output is correct
44 Correct 10 ms 16128 KB Output is correct
45 Correct 11 ms 16128 KB Output is correct
46 Execution timed out 1581 ms 17132 KB Time limit exceeded
47 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16000 KB Output is correct
2 Correct 9 ms 16000 KB Output is correct
3 Correct 9 ms 16000 KB Output is correct
4 Correct 8 ms 16000 KB Output is correct
5 Correct 9 ms 16000 KB Output is correct
6 Correct 9 ms 16000 KB Output is correct
7 Correct 9 ms 16000 KB Output is correct
8 Correct 9 ms 16000 KB Output is correct
9 Correct 8 ms 16000 KB Output is correct
10 Correct 9 ms 16000 KB Output is correct
11 Correct 9 ms 16000 KB Output is correct
12 Correct 9 ms 16032 KB Output is correct
13 Correct 9 ms 16000 KB Output is correct
14 Correct 9 ms 16000 KB Output is correct
15 Correct 9 ms 16000 KB Output is correct
16 Correct 9 ms 16000 KB Output is correct
17 Correct 9 ms 16000 KB Output is correct
18 Correct 9 ms 16000 KB Output is correct
19 Correct 9 ms 16000 KB Output is correct
20 Correct 10 ms 16000 KB Output is correct
21 Correct 10 ms 16128 KB Output is correct
22 Correct 9 ms 16000 KB Output is correct
23 Correct 9 ms 16128 KB Output is correct
24 Correct 9 ms 16000 KB Output is correct
25 Correct 9 ms 16000 KB Output is correct
26 Correct 9 ms 16000 KB Output is correct
27 Correct 9 ms 16000 KB Output is correct
28 Correct 9 ms 16000 KB Output is correct
29 Correct 9 ms 16000 KB Output is correct
30 Correct 9 ms 16000 KB Output is correct
31 Correct 14 ms 16172 KB Output is correct
32 Correct 12 ms 16156 KB Output is correct
33 Correct 11 ms 16128 KB Output is correct
34 Correct 11 ms 16128 KB Output is correct
35 Correct 11 ms 16128 KB Output is correct
36 Correct 12 ms 16128 KB Output is correct
37 Correct 11 ms 16128 KB Output is correct
38 Correct 10 ms 16000 KB Output is correct
39 Correct 11 ms 16128 KB Output is correct
40 Correct 11 ms 16128 KB Output is correct
41 Correct 11 ms 16128 KB Output is correct
42 Correct 11 ms 16128 KB Output is correct
43 Correct 11 ms 16128 KB Output is correct
44 Correct 10 ms 16128 KB Output is correct
45 Correct 11 ms 16128 KB Output is correct
46 Execution timed out 1581 ms 17132 KB Time limit exceeded
47 Halted 0 ms 0 KB -