oj.uz

Submission #209634

# Submission time Handle Problem Language Result Execution time Memory
209634 2020-03-15T00:41:34 Z erd1 Two Antennas (JOI19_antennas) C++14
100 / 100
 1915 ms 44636 KB 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
template<typename It>
ostream& _out(ostream& out, It b, It e){
    for(It i = b; i != e; i++)
        out << (i==b?"":" ") << *i;
    return out;
}
template<typename T1, typename T2>
ostream& operator<<(ostream& out, pair<T1, T2> a){
    return out << '(' << a.ff << ", " << a.ss << ')';
}
template<typename T, size_t N>
ostream& operator<<(ostream& out, array<T, N> a){
    return _out(out << '[', all(a)) << ']';
}
template<typename T>
ostream& operator<<(ostream& out, vector<T> a){
    return _out(out << '[', all(a)) << ']';
}

struct node{
    node *L, *R;
    int lt = 1050000000, ans = -1, maxh = -1050000000,
        l, r;
    node(int ll, int rr){
        l = ll, r = rr;
        if(l != r)L = new node(l, l+r>>1), R = new node((l+r>>1)+1, r);
    }
    void update(int x){
        if(lt <= x)return;
        lt = x;
        ans = max(ans, maxh-lt);
        //cout << "upd" << l<<r<<lt << " " << ans << endl;
    }
    void down(){
        //cout << lt << endl;
        L->update(lt), R->update(lt);
        lt = 1050000000;
        //cout << (array<int, 5>){l, r, ans ,L->ans, R->ans} << endl;
        assert(max(L->ans, R->ans) >= ans);
    }
    void up(){
        maxh = max(L->maxh, R->maxh);
        //assert(max(L->ans, R->ans) >= ans);
        ans = max(L->ans, R->ans);
    }
    void modify(int x, int val){
        if(l == r)return (void) (maxh = val, lt = 1050000000);
        down();
        (x <= (l+r>>1)?L:R)->modify(x, val);
        up();
        //cout << l << r << " " << maxh << endl;
    }
    int query(int ll, int rr){
        if(ll <= l && r <= rr)return ans;
        if(ll > r || rr < l)return -1;
        down();
        return max(L->query(ll, rr), R->query(ll, rr));
    }
    void modifyr(int ll, int rr, int x){
        if(ll <= l && r <= rr)return (void) update(x);
        if(ll > r || rr < l)return;
        down();
        L->modifyr(ll, rr, x);
        R->modifyr(ll, rr, x);
        up();
        //cout << l << r << "  " << ans << endl;
    }
    void clear(){
        lt = 1050000000, ans = -1, maxh = -1050000000;
        if(l != r)L->clear(), R->clear();
    }
} *root;
vector<array<int, 5>> events; // pos, type, (pos, val) / (l, id)
vector<int> qans;
signed main(){
    #ifdef LOCAL
    freopen("jizz.in","r",stdin);
    #endif
    int n, q;
    cin >> n;
    for(int i = 1; i <= n; i++){
        int w, a, b;
        cin >> w >> a >> b;
        events.pb({i+a, 0, i, w, 0});
        events.pb({i+b, 3, i, 0, 0});
        events.pb({i, 1, i-b, i-a, w});
    }
    cin >> q; qans.resize(q, -1);
    for(int i = 0; i < q; i++){
        int l, r;
        cin >> l >> r;
        events.pb({r, 2, l, i});
    }
    sort(all(events));
    root = new node(1, n);
    for(auto i: events){
        //cout << i << endl;
        switch(i[1]){
            case 0:
                root->modify(i[2], i[3]);
                break;
            case 1:
                root->modifyr(i[2],i[3], i[4]);
                break;
            case 2:
                qans[i[3]] = max(qans[i[3]], root->query(i[2],i[0]));
                break;
            case 3:
                root->modify(i[2], -1050000000);
                break;
        }
    }
    root->clear();
    for(auto i: events){
        switch(i[1]){
            case 0:
                root->modify(i[2], -i[3]);
                break;
            case 1:
                root->modifyr(i[2],i[3], -i[4]);
                break;
            case 2:
                qans[i[3]] = max(qans[i[3]], root->query(i[2],i[0]));
                break;
            case 3:
                root->modify(i[2], -1050000000);
                break;
        }
    }
    for(auto i: qans)cout << i << endl;
}

Compilation message

antennas.cpp: In constructor 'node::node(int, int)':
antennas.cpp:32:36: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         if(l != r)L = new node(l, l+r>>1), R = new node((l+r>>1)+1, r);
                                   ~^~
antennas.cpp:32:59: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         if(l != r)L = new node(l, l+r>>1), R = new node((l+r>>1)+1, r);
                                                          ~^~
antennas.cpp: In member function 'void node::modify(int, int)':
antennas.cpp:55:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         (x <= (l+r>>1)?L:R)->modify(x, val);
                ~^~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 372 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 6 ms 376 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 7 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 6 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 6 ms 376 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 372 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 6 ms 376 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 7 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 6 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 6 ms 376 KB Output is correct
25 Correct 473 ms 7268 KB Output is correct
26 Correct 58 ms 1264 KB Output is correct
27 Correct 646 ms 8800 KB Output is correct
28 Correct 626 ms 8924 KB Output is correct
29 Correct 460 ms 7268 KB Output is correct
30 Correct 435 ms 7324 KB Output is correct
31 Correct 598 ms 8156 KB Output is correct
32 Correct 653 ms 8928 KB Output is correct
33 Correct 597 ms 8360 KB Output is correct
34 Correct 302 ms 4584 KB Output is correct
35 Correct 623 ms 8800 KB Output is correct
36 Correct 640 ms 8928 KB Output is correct
37 Correct 373 ms 4840 KB Output is correct
38 Correct 645 ms 8032 KB Output is correct
39 Correct 93 ms 2028 KB Output is correct
40 Correct 637 ms 8028 KB Output is correct
41 Correct 459 ms 7528 KB Output is correct
42 Correct 626 ms 8028 KB Output is correct
43 Correct 218 ms 3948 KB Output is correct
44 Correct 622 ms 8028 KB Output is correct
45 Correct 116 ms 2160 KB Output is correct
46 Correct 628 ms 7904 KB Output is correct
47 Correct 169 ms 2540 KB Output is correct
48 Correct 631 ms 7904 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 844 ms 31924 KB Output is correct
2 Correct 915 ms 35380 KB Output is correct
3 Correct 593 ms 24908 KB Output is correct
4 Correct 926 ms 35380 KB Output is correct
5 Correct 360 ms 16380 KB Output is correct
6 Correct 944 ms 35508 KB Output is correct
7 Correct 797 ms 30668 KB Output is correct
8 Correct 941 ms 35380 KB Output is correct
9 Correct 113 ms 5988 KB Output is correct
10 Correct 952 ms 35380 KB Output is correct
11 Correct 528 ms 22196 KB Output is correct
12 Correct 958 ms 35432 KB Output is correct
13 Correct 585 ms 35256 KB Output is correct
14 Correct 614 ms 35252 KB Output is correct
15 Correct 602 ms 35252 KB Output is correct
16 Correct 560 ms 35244 KB Output is correct
17 Correct 590 ms 35232 KB Output is correct
18 Correct 604 ms 35252 KB Output is correct
19 Correct 577 ms 35252 KB Output is correct
20 Correct 585 ms 35252 KB Output is correct
21 Correct 596 ms 35252 KB Output is correct
22 Correct 606 ms 35252 KB Output is correct
23 Correct 579 ms 35212 KB Output is correct
24 Correct 560 ms 35204 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 372 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 6 ms 376 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 7 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 6 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 6 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 6 ms 376 KB Output is correct
25 Correct 473 ms 7268 KB Output is correct
26 Correct 58 ms 1264 KB Output is correct
27 Correct 646 ms 8800 KB Output is correct
28 Correct 626 ms 8924 KB Output is correct
29 Correct 460 ms 7268 KB Output is correct
30 Correct 435 ms 7324 KB Output is correct
31 Correct 598 ms 8156 KB Output is correct
32 Correct 653 ms 8928 KB Output is correct
33 Correct 597 ms 8360 KB Output is correct
34 Correct 302 ms 4584 KB Output is correct
35 Correct 623 ms 8800 KB Output is correct
36 Correct 640 ms 8928 KB Output is correct
37 Correct 373 ms 4840 KB Output is correct
38 Correct 645 ms 8032 KB Output is correct
39 Correct 93 ms 2028 KB Output is correct
40 Correct 637 ms 8028 KB Output is correct
41 Correct 459 ms 7528 KB Output is correct
42 Correct 626 ms 8028 KB Output is correct
43 Correct 218 ms 3948 KB Output is correct
44 Correct 622 ms 8028 KB Output is correct
45 Correct 116 ms 2160 KB Output is correct
46 Correct 628 ms 7904 KB Output is correct
47 Correct 169 ms 2540 KB Output is correct
48 Correct 631 ms 7904 KB Output is correct
49 Correct 844 ms 31924 KB Output is correct
50 Correct 915 ms 35380 KB Output is correct
51 Correct 593 ms 24908 KB Output is correct
52 Correct 926 ms 35380 KB Output is correct
53 Correct 360 ms 16380 KB Output is correct
54 Correct 944 ms 35508 KB Output is correct
55 Correct 797 ms 30668 KB Output is correct
56 Correct 941 ms 35380 KB Output is correct
57 Correct 113 ms 5988 KB Output is correct
58 Correct 952 ms 35380 KB Output is correct
59 Correct 528 ms 22196 KB Output is correct
60 Correct 958 ms 35432 KB Output is correct
61 Correct 585 ms 35256 KB Output is correct
62 Correct 614 ms 35252 KB Output is correct
63 Correct 602 ms 35252 KB Output is correct
64 Correct 560 ms 35244 KB Output is correct
65 Correct 590 ms 35232 KB Output is correct
66 Correct 604 ms 35252 KB Output is correct
67 Correct 577 ms 35252 KB Output is correct
68 Correct 585 ms 35252 KB Output is correct
69 Correct 596 ms 35252 KB Output is correct
70 Correct 606 ms 35252 KB Output is correct
71 Correct 579 ms 35212 KB Output is correct
72 Correct 560 ms 35204 KB Output is correct
73 Correct 1518 ms 38840 KB Output is correct
74 Correct 1022 ms 36020 KB Output is correct
75 Correct 1537 ms 34100 KB Output is correct
76 Correct 1915 ms 44596 KB Output is correct
77 Correct 1000 ms 22988 KB Output is correct
78 Correct 1547 ms 41652 KB Output is correct
79 Correct 1718 ms 39988 KB Output is correct
80 Correct 1863 ms 44636 KB Output is correct
81 Correct 832 ms 14416 KB Output is correct
82 Correct 1390 ms 39860 KB Output is correct
83 Correct 1372 ms 31408 KB Output is correct
84 Correct 1870 ms 44596 KB Output is correct
85 Correct 1072 ms 39860 KB Output is correct
86 Correct 1458 ms 43396 KB Output is correct
87 Correct 701 ms 36304 KB Output is correct
88 Correct 1422 ms 43316 KB Output is correct
89 Correct 1236 ms 41140 KB Output is correct
90 Correct 1449 ms 43384 KB Output is correct
91 Correct 860 ms 37940 KB Output is correct
92 Correct 1480 ms 43316 KB Output is correct
93 Correct 729 ms 36532 KB Output is correct
94 Correct 1455 ms 43316 KB Output is correct
95 Correct 813 ms 37300 KB Output is correct
96 Correct 1421 ms 43420 KB Output is correct