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Submission #570882

# Submission time Handle Problem Language Result Execution time Memory
570882 2022-05-31T13:30:32 Z OttoTheDino Triple Jump (JOI19_jumps) C++17
100 / 100
 1041 ms 66864 KB 
#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                  for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (int i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
#define len(a)                      (int)a.size()
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

const int mx = 5e5;
int seg[4*mx+5], lazy[4*mx+5], a[mx+1], b[mx+2];
set<int> st;

void upd (int l, int r, int bl, int br, int val, int id) {
    if (l==bl && r==br) {
        seg[id] += val;
        lazy[id] += val;
        return;
    }
    int mid = (bl+br)/2;
    if (r<=mid) upd (l, r, bl, mid, val, 2*id);
    else if (l>mid) upd (l, r, mid+1, br, val, 2*id+1);
    else {
        upd (l, mid, bl, mid, val, 2*id);
        upd (mid+1, r, mid+1, br, val, 2*id+1);
    }
    seg[id] = max(seg[2*id], seg[2*id+1])+lazy[id];
}

int qry (int l, int r, int bl, int br, int id) {
    if (l==bl && r==br) return seg[id];

    int mid = (bl+br)/2;
    if (r<=mid) return lazy[id] + qry (l, r, bl, mid, 2*id);
    if (l>mid) return lazy[id] + qry (l, r, mid+1, br, 2*id+1);
    return lazy[id] + max( qry(l, mid, bl, mid, 2*id), qry(mid+1, r, mid+1, br, 2*id+1));
}

void adij (int i, int j) {
    int x = 2*j-i;
    if (x>=*st.rbegin()) return;
    auto it = st.upper_bound(x);
    if (it!=st.begin()) {
        if (a[i]+a[j] > b[*prev(it)]) {
            upd (x, *it-1, 1, mx, a[i]+a[j] - b[*prev(it)], 1);
            b[x] = a[i]+a[j];
            st.insert(x);
        }
    }
    else {
        upd (x, *it-1, 1, mx, a[i]+a[j], 1);
        b[x] = a[i]+a[j];
        st.insert(x);
    }
    while (a[i]+a[j] > b[*it]) {
        upd (*it, *next(it)-1, 1, mx, a[i]+a[j]-b[*it], 1);
        it = st.erase(it);
    }
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, q; cin >> n;
    st.insert(n+1);
    b[n+1] = 1e9;
    vii rs[n+1];
    rep (i,1,n) cin >> a[i];
    cin >> q;
    int ans[q+1] = {};
    rep (i,1,q) {
        int l, r; cin >> l >> r;
        rs[l].pb({r,i});
    }
    stack<int> js;
    rrep (i,n,1) {
        upd (i, i, 1, mx, a[i], 1);
        while ( len(js) && a[js.top()] < a[i]) {
            adij(i, js.top());
            js.pop();
        } 
        if (len(js)) adij(i, js.top());
        js.push(i);
        for (ii ri : rs[i]) ans[ri.se] = qry (i+2, ri.fi, 1, mx, 1);
    }
    rep (i,1,q) cout << ans[i] << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 222 ms 19304 KB Output is correct
12 Correct 295 ms 19168 KB Output is correct
13 Correct 219 ms 19216 KB Output is correct
14 Correct 299 ms 19172 KB Output is correct
15 Correct 222 ms 19360 KB Output is correct
16 Correct 220 ms 18640 KB Output is correct
17 Correct 213 ms 18604 KB Output is correct
18 Correct 216 ms 18540 KB Output is correct
19 Correct 285 ms 19284 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 177 ms 11540 KB Output is correct
2 Correct 130 ms 21116 KB Output is correct
3 Correct 142 ms 11340 KB Output is correct
4 Correct 179 ms 11260 KB Output is correct
5 Correct 219 ms 11344 KB Output is correct
6 Correct 182 ms 10956 KB Output is correct
7 Correct 246 ms 10932 KB Output is correct
8 Correct 177 ms 10920 KB Output is correct
9 Correct 208 ms 11328 KB Output is correct

Subtask #4
54.0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 222 ms 19304 KB Output is correct
12 Correct 295 ms 19168 KB Output is correct
13 Correct 219 ms 19216 KB Output is correct
14 Correct 299 ms 19172 KB Output is correct
15 Correct 222 ms 19360 KB Output is correct
16 Correct 220 ms 18640 KB Output is correct
17 Correct 213 ms 18604 KB Output is correct
18 Correct 216 ms 18540 KB Output is correct
19 Correct 285 ms 19284 KB Output is correct
20 Correct 177 ms 11540 KB Output is correct
21 Correct 130 ms 21116 KB Output is correct
22 Correct 142 ms 11340 KB Output is correct
23 Correct 179 ms 11260 KB Output is correct
24 Correct 219 ms 11344 KB Output is correct
25 Correct 182 ms 10956 KB Output is correct
26 Correct 246 ms 10932 KB Output is correct
27 Correct 177 ms 10920 KB Output is correct
28 Correct 208 ms 11328 KB Output is correct
29 Correct 1002 ms 42480 KB Output is correct
30 Correct 846 ms 66864 KB Output is correct
31 Correct 847 ms 42408 KB Output is correct
32 Correct 1041 ms 42336 KB Output is correct
33 Correct 1004 ms 42324 KB Output is correct
34 Correct 999 ms 41624 KB Output is correct
35 Correct 965 ms 41828 KB Output is correct
36 Correct 1002 ms 41616 KB Output is correct
37 Correct 936 ms 42300 KB Output is correct
38 Correct 698 ms 47960 KB Output is correct
39 Correct 711 ms 47968 KB Output is correct
40 Correct 766 ms 46268 KB Output is correct
41 Correct 669 ms 46024 KB Output is correct
42 Correct 648 ms 46064 KB Output is correct
43 Correct 730 ms 46948 KB Output is correct
44 Correct 757 ms 47424 KB Output is correct
45 Correct 727 ms 47448 KB Output is correct
46 Correct 753 ms 45868 KB Output is correct
47 Correct 712 ms 45928 KB Output is correct
48 Correct 863 ms 45684 KB Output is correct
49 Correct 801 ms 47200 KB Output is correct
50 Correct 861 ms 45600 KB Output is correct
51 Correct 833 ms 45388 KB Output is correct
52 Correct 834 ms 44680 KB Output is correct
53 Correct 803 ms 44492 KB Output is correct
54 Correct 820 ms 44532 KB Output is correct
55 Correct 797 ms 45328 KB Output is correct