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Submission #1043853

# Submission time Handle Problem Language Result Execution time Memory
1043853 2024-08-05T01:28:49 Z Yang8on Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
100 / 100
 742 ms 161104 KB 
#include <bits/stdc++.h>
#define file "main"
#define maxn (int) 1e6 + 5
#define pii pair<int, int>
#define ll long long
#define gb(i, j) ((i >> j) & 1)
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r

using namespace std;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll GetRandom(ll l, ll r) {
    return uniform_int_distribution<ll> (l, r) (rng);
}

void iof() {
    if(fopen(file".inp", "r")) {
        freopen(file".inp", "r", stdin);
//        freopen(file".out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(NULL), cout.tie(NULL);
}

int n, Q, ans[maxn];
int a[maxn], pre[maxn];
int L[maxn][20], Log[maxn];
struct dl { int f, s, k, id; } qr[maxn];
vector<int> o[maxn];

int get(int i, int j) {
    int kc = Log[j - i + 1];
    return max( L[i][kc], L[j - (1 << kc) + 1][kc] );
}

struct SEGMT {
    int st[4 * maxn];

    void build(int id = 1, int l = 1, int r = n) {
        if(l == r) return st[id] = pre[l] != 0 ? a[l] + a[ pre[l] ] : 0, void();
        int mid = (l + r) >> 1;
        build(_left), build(_right);
        st[id] = max(st[id * 2], st[id * 2 + 1]);
    }
    void update(int i, int id = 1, int l = 1, int r = n) {
        if(i < l || r < i) return ;
        if(l == r) return st[id] = 0, void();
        int mid = (l + r) >> 1;
        update(i, _left), update(i, _right);
        st[id] = max(st[id * 2], st[id * 2 + 1]);
    }
    int get(int u, int v, int id = 1, int l = 1, int r = n) {
        if(v < l || r < u) return 0;
        if(u <= l && r <= v) return st[id];
        int mid = (l + r) >> 1;
        return max( get(u, v, _left), get(u, v, _right) );
    }
} ST;

void solve() {
    cin >> n >> Q ;
    for(int i = 1; i <= n; i ++) {
        cin >> a[i], L[i][0] = a[i], Log[i] = __lg(i);
    }

    for(int i = 1; i <= Log[n]; i ++) {
        for(int j = 1; j + (1 << i) - 1 <= n; j ++) {
            L[j][i] = max(L[j][i - 1], L[j + (1 << (i - 1))][i - 1]);
        }
    }

    for(int i = 1; i <= n; i ++) {
        int l = 1, r = i;
        while(l <= r) {
            int mid = (l + r) >> 1;
            if( get(mid, i) > a[i] ) l = mid + 1;
            else r = mid - 1;
        }
        pre[i] = r;
        o[r].push_back(i);
    }

    ST.build();
    for(int i = 1; i <= Q; i ++) cin >> qr[i].f >> qr[i].s >> qr[i].k, qr[i].id = i;

    sort(qr + 1, qr + Q + 1, [](dl x, dl y) {
        return x.f < y.f;
    });

    int j = 1;
    for(int i = 1; i <= Q; i ++) {
        int l = qr[i].f, r = qr[i].s, k = qr[i].k, id = qr[i].id;
        while(j < l) {
            for(int pos : o[j]) ST.update(pos);
            j ++;
        }
        ans[id] = ST.get(l, r) <= k;
    }
    for(int i = 1; i <= Q; i ++) cout << ans[i] << '\n';
}

int main()
{
    iof();

    int nTest = 1;
//    cin >> nTest;

    while(nTest --) {
        solve();
    }

    return 0;
}

Compilation message

sortbooks.cpp: In function 'void iof()':
sortbooks.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen(file".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 35160 KB Output is correct
2 Correct 4 ms 35164 KB Output is correct
3 Correct 4 ms 35164 KB Output is correct
4 Correct 4 ms 35164 KB Output is correct
5 Correct 5 ms 35160 KB Output is correct
6 Correct 4 ms 35164 KB Output is correct
7 Correct 5 ms 35160 KB Output is correct
8 Correct 5 ms 35360 KB Output is correct
9 Correct 5 ms 35160 KB Output is correct
10 Correct 5 ms 35160 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 35160 KB Output is correct
2 Correct 4 ms 35164 KB Output is correct
3 Correct 4 ms 35164 KB Output is correct
4 Correct 4 ms 35164 KB Output is correct
5 Correct 5 ms 35160 KB Output is correct
6 Correct 4 ms 35164 KB Output is correct
7 Correct 5 ms 35160 KB Output is correct
8 Correct 5 ms 35360 KB Output is correct
9 Correct 5 ms 35160 KB Output is correct
10 Correct 5 ms 35160 KB Output is correct
11 Correct 6 ms 37212 KB Output is correct
12 Correct 8 ms 37548 KB Output is correct
13 Correct 7 ms 37468 KB Output is correct
14 Correct 10 ms 37544 KB Output is correct
15 Correct 7 ms 37468 KB Output is correct
16 Correct 7 ms 37348 KB Output is correct
17 Correct 6 ms 37392 KB Output is correct
18 Correct 6 ms 37468 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 729 ms 160972 KB Output is correct
2 Correct 732 ms 161084 KB Output is correct
3 Correct 736 ms 161104 KB Output is correct
4 Correct 724 ms 161004 KB Output is correct
5 Correct 594 ms 148856 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 49432 KB Output is correct
2 Correct 51 ms 49444 KB Output is correct
3 Correct 49 ms 48336 KB Output is correct
4 Correct 52 ms 48336 KB Output is correct
5 Correct 48 ms 48336 KB Output is correct
6 Correct 43 ms 48332 KB Output is correct
7 Correct 52 ms 48336 KB Output is correct
8 Correct 47 ms 48344 KB Output is correct
9 Correct 24 ms 37468 KB Output is correct
10 Correct 45 ms 48468 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 35160 KB Output is correct
2 Correct 4 ms 35164 KB Output is correct
3 Correct 4 ms 35164 KB Output is correct
4 Correct 4 ms 35164 KB Output is correct
5 Correct 5 ms 35160 KB Output is correct
6 Correct 4 ms 35164 KB Output is correct
7 Correct 5 ms 35160 KB Output is correct
8 Correct 5 ms 35360 KB Output is correct
9 Correct 5 ms 35160 KB Output is correct
10 Correct 5 ms 35160 KB Output is correct
11 Correct 6 ms 37212 KB Output is correct
12 Correct 8 ms 37548 KB Output is correct
13 Correct 7 ms 37468 KB Output is correct
14 Correct 10 ms 37544 KB Output is correct
15 Correct 7 ms 37468 KB Output is correct
16 Correct 7 ms 37348 KB Output is correct
17 Correct 6 ms 37392 KB Output is correct
18 Correct 6 ms 37468 KB Output is correct
19 Correct 128 ms 65656 KB Output is correct
20 Correct 152 ms 65656 KB Output is correct
21 Correct 110 ms 65616 KB Output is correct
22 Correct 121 ms 65660 KB Output is correct
23 Correct 113 ms 65616 KB Output is correct
24 Correct 101 ms 63344 KB Output is correct
25 Correct 94 ms 63436 KB Output is correct
26 Correct 113 ms 63436 KB Output is correct
27 Correct 104 ms 63352 KB Output is correct
28 Correct 105 ms 63384 KB Output is correct
29 Correct 108 ms 63432 KB Output is correct
30 Correct 110 ms 63436 KB Output is correct
31 Correct 104 ms 63352 KB Output is correct
32 Correct 108 ms 63436 KB Output is correct
33 Correct 105 ms 63432 KB Output is correct
34 Correct 92 ms 63356 KB Output is correct
35 Correct 91 ms 63400 KB Output is correct
36 Correct 94 ms 63436 KB Output is correct
37 Correct 90 ms 63436 KB Output is correct
38 Correct 90 ms 63352 KB Output is correct
39 Correct 97 ms 63948 KB Output is correct
40 Correct 75 ms 52944 KB Output is correct
41 Correct 97 ms 63572 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 35160 KB Output is correct
2 Correct 4 ms 35164 KB Output is correct
3 Correct 4 ms 35164 KB Output is correct
4 Correct 4 ms 35164 KB Output is correct
5 Correct 5 ms 35160 KB Output is correct
6 Correct 4 ms 35164 KB Output is correct
7 Correct 5 ms 35160 KB Output is correct
8 Correct 5 ms 35360 KB Output is correct
9 Correct 5 ms 35160 KB Output is correct
10 Correct 5 ms 35160 KB Output is correct
11 Correct 6 ms 37212 KB Output is correct
12 Correct 8 ms 37548 KB Output is correct
13 Correct 7 ms 37468 KB Output is correct
14 Correct 10 ms 37544 KB Output is correct
15 Correct 7 ms 37468 KB Output is correct
16 Correct 7 ms 37348 KB Output is correct
17 Correct 6 ms 37392 KB Output is correct
18 Correct 6 ms 37468 KB Output is correct
19 Correct 729 ms 160972 KB Output is correct
20 Correct 732 ms 161084 KB Output is correct
21 Correct 736 ms 161104 KB Output is correct
22 Correct 724 ms 161004 KB Output is correct
23 Correct 594 ms 148856 KB Output is correct
24 Correct 59 ms 49432 KB Output is correct
25 Correct 51 ms 49444 KB Output is correct
26 Correct 49 ms 48336 KB Output is correct
27 Correct 52 ms 48336 KB Output is correct
28 Correct 48 ms 48336 KB Output is correct
29 Correct 43 ms 48332 KB Output is correct
30 Correct 52 ms 48336 KB Output is correct
31 Correct 47 ms 48344 KB Output is correct
32 Correct 24 ms 37468 KB Output is correct
33 Correct 45 ms 48468 KB Output is correct
34 Correct 128 ms 65656 KB Output is correct
35 Correct 152 ms 65656 KB Output is correct
36 Correct 110 ms 65616 KB Output is correct
37 Correct 121 ms 65660 KB Output is correct
38 Correct 113 ms 65616 KB Output is correct
39 Correct 101 ms 63344 KB Output is correct
40 Correct 94 ms 63436 KB Output is correct
41 Correct 113 ms 63436 KB Output is correct
42 Correct 104 ms 63352 KB Output is correct
43 Correct 105 ms 63384 KB Output is correct
44 Correct 108 ms 63432 KB Output is correct
45 Correct 110 ms 63436 KB Output is correct
46 Correct 104 ms 63352 KB Output is correct
47 Correct 108 ms 63436 KB Output is correct
48 Correct 105 ms 63432 KB Output is correct
49 Correct 92 ms 63356 KB Output is correct
50 Correct 91 ms 63400 KB Output is correct
51 Correct 94 ms 63436 KB Output is correct
52 Correct 90 ms 63436 KB Output is correct
53 Correct 90 ms 63352 KB Output is correct
54 Correct 97 ms 63948 KB Output is correct
55 Correct 75 ms 52944 KB Output is correct
56 Correct 97 ms 63572 KB Output is correct
57 Correct 742 ms 160848 KB Output is correct
58 Correct 727 ms 160848 KB Output is correct
59 Correct 696 ms 160852 KB Output is correct
60 Correct 676 ms 160852 KB Output is correct
61 Correct 712 ms 160860 KB Output is correct
62 Correct 742 ms 161024 KB Output is correct
63 Correct 569 ms 148676 KB Output is correct
64 Correct 517 ms 148932 KB Output is correct
65 Correct 587 ms 148904 KB Output is correct
66 Correct 575 ms 148668 KB Output is correct
67 Correct 588 ms 148872 KB Output is correct
68 Correct 602 ms 148684 KB Output is correct
69 Correct 638 ms 148692 KB Output is correct
70 Correct 604 ms 148920 KB Output is correct
71 Correct 583 ms 148896 KB Output is correct
72 Correct 587 ms 148668 KB Output is correct
73 Correct 512 ms 148832 KB Output is correct
74 Correct 515 ms 148672 KB Output is correct
75 Correct 512 ms 148668 KB Output is correct
76 Correct 488 ms 148668 KB Output is correct
77 Correct 538 ms 148672 KB Output is correct
78 Correct 562 ms 152768 KB Output is correct
79 Correct 370 ms 107400 KB Output is correct
80 Correct 566 ms 149572 KB Output is correct