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Submission #529225

# Submission time Handle Problem Language Result Execution time Memory
529225 2022-02-22T13:41:16 Z N1NT3NDO Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 541 ms 30704 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define sz(x) (int)x.size()
#define fi first
#define sd second
#define all(x) x.begin(), x.end()
//#pragma GCC target ("avx2")
//#pragma GCC optimization ("O3")
//#pragma GCC optimization ("unroll-loops")

using namespace std;
//using namespace __gnu_pbds;

//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const int N = (int)2e5 + 5;
int n, l[N], r[N], q, nxt[N], t[8 * N], mod[8 * N], up[N][22];
vector<int> vec;

void push(int v)
{
    mod[v + v] = min(mod[v + v], mod[v]);
    mod[v + v + 1] = min(mod[v + v + 1], mod[v]);
    t[v + v] = min(t[v + v], mod[v]);
    t[v + v + 1] = min(t[v + v + 1], mod[v]);
}

void build(int v, int tl, int tr)
{
    t[v] = n + 1;
    mod[v] = n + 1;
    if (tl == tr)
      return;

    int m = (tl + tr) >> 1;
    build(v + v, tl, m);
    build(v + v + 1, m + 1, tr);
}

int get(int v,      int tl, int tr, int l, int r)
{
    if (tl > tr || tl > r || tr < l) return n + 1;

    if (tl >= l && tr <= r)
      return t[v];

    push(v);
    int m = (tl + tr) >> 1;
    return min(get(v + v, tl, m, l, r), get(v + v + 1, m + 1, tr, l, r));
}

void upd(int v, int tl, int tr, int l, int r, int val)
{
    if (tl > tr || tl > r || tr < l) return;

    if (tl >= l && tr <= r)
    {
        t[v] = val;
        mod[v] = val;
        return;
    }

    int m = (tl + tr) >> 1;
    push(v);
    upd(v + v, tl, m, l, r, val);
    upd(v + v + 1, m + 1, tr, l, r, val);
    t[v] = min(t[v + v], t[v + v + 1]);
}

int get_ans(int a, int b)
{
    int ans = 0;
    for(int i = 19; i >= 0; i--)
      {
          if (up[a][i] <= b)
            a = up[a][i], ans += (1 << i);
      }

    return ans + 1;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        cin >> l[i] >> r[i];
        vec.pb(l[i]);
        vec.pb(r[i]);
    }

    sort(all(vec));
    vec.resize(unique(all(vec)) - vec.begin());
    for(int i = 1; i <= n; i++)
    {
        l[i] = lower_bound(all(vec), l[i]) - vec.begin(); l[i]++;
        r[i] = lower_bound(all(vec), r[i]) - vec.begin(); r[i]++;
    }

    build(1, 1, 2 * n);
    for(int i = n; i >= 1; i--)
    {

        int val = get(1, 1, 2 * n, l[i], r[i]);
        nxt[i] = val;

        upd(1, 1, 2 * n, l[i], r[i], i);
    }

    int mn = n + 1;
    for(int i = n; i >= 1; i--)
    {
        mn = min(mn, nxt[i]);
        nxt[i] = mn;
        up[i][0] = nxt[i];
    }

    for(int j = 0; j <= 19; j++)
      up[n + 1][j] = n + 1;

    for(int j = 1; j <= 19; j++)
    {
        for(int i = 1; i <= n; i++)
            up[i][j] = up[up[i][j - 1]][j - 1];
    }

    cin >> q;
    while(q--)
    {
        int le, ri;
        cin >> le >> ri;
        cout << get_ans(le, ri) << '\n';
    }

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 28856 KB Output is correct
2 Correct 350 ms 28544 KB Output is correct
3 Correct 348 ms 28604 KB Output is correct
4 Correct 355 ms 28792 KB Output is correct
5 Correct 387 ms 29616 KB Output is correct
6 Correct 143 ms 27732 KB Output is correct
7 Correct 147 ms 28120 KB Output is correct
8 Correct 155 ms 28272 KB Output is correct
9 Correct 162 ms 28796 KB Output is correct
10 Correct 155 ms 28152 KB Output is correct
11 Correct 268 ms 29244 KB Output is correct
12 Correct 243 ms 28056 KB Output is correct
13 Correct 246 ms 27960 KB Output is correct
14 Correct 285 ms 29224 KB Output is correct
15 Correct 251 ms 28696 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 150 ms 29040 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1228 KB Output is correct
2 Correct 8 ms 1100 KB Output is correct
3 Correct 8 ms 1100 KB Output is correct
4 Correct 9 ms 1100 KB Output is correct
5 Correct 8 ms 1136 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 5 ms 1100 KB Output is correct
8 Correct 5 ms 1200 KB Output is correct
9 Correct 5 ms 1100 KB Output is correct
10 Correct 5 ms 1100 KB Output is correct
11 Correct 6 ms 1100 KB Output is correct
12 Correct 6 ms 1100 KB Output is correct
13 Correct 6 ms 1180 KB Output is correct
14 Correct 6 ms 1100 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 4 ms 1100 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1228 KB Output is correct
2 Correct 8 ms 1100 KB Output is correct
3 Correct 8 ms 1100 KB Output is correct
4 Correct 9 ms 1100 KB Output is correct
5 Correct 8 ms 1136 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 5 ms 1100 KB Output is correct
8 Correct 5 ms 1200 KB Output is correct
9 Correct 5 ms 1100 KB Output is correct
10 Correct 5 ms 1100 KB Output is correct
11 Correct 6 ms 1100 KB Output is correct
12 Correct 6 ms 1100 KB Output is correct
13 Correct 6 ms 1180 KB Output is correct
14 Correct 6 ms 1100 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 4 ms 1100 KB Output is correct
18 Correct 70 ms 2008 KB Output is correct
19 Correct 76 ms 1920 KB Output is correct
20 Correct 90 ms 1972 KB Output is correct
21 Correct 66 ms 1936 KB Output is correct
22 Correct 69 ms 1948 KB Output is correct
23 Correct 63 ms 1904 KB Output is correct
24 Correct 70 ms 1988 KB Output is correct
25 Correct 63 ms 2000 KB Output is correct
26 Correct 62 ms 1848 KB Output is correct
27 Correct 61 ms 1860 KB Output is correct
28 Correct 48 ms 1448 KB Output is correct
29 Correct 51 ms 1476 KB Output is correct
30 Correct 52 ms 1544 KB Output is correct
31 Correct 50 ms 1428 KB Output is correct
32 Correct 54 ms 1504 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 51 ms 2168 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 377 ms 29796 KB Output is correct
2 Correct 370 ms 29244 KB Output is correct
3 Correct 367 ms 27852 KB Output is correct
4 Correct 336 ms 27632 KB Output is correct
5 Correct 361 ms 28360 KB Output is correct
6 Correct 142 ms 27888 KB Output is correct
7 Correct 145 ms 27748 KB Output is correct
8 Correct 148 ms 28064 KB Output is correct
9 Correct 150 ms 27668 KB Output is correct
10 Correct 167 ms 29384 KB Output is correct
11 Correct 246 ms 27832 KB Output is correct
12 Correct 276 ms 29896 KB Output is correct
13 Correct 240 ms 27868 KB Output is correct
14 Correct 251 ms 28404 KB Output is correct
15 Correct 285 ms 29632 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 147 ms 28216 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 28856 KB Output is correct
2 Correct 350 ms 28544 KB Output is correct
3 Correct 348 ms 28604 KB Output is correct
4 Correct 355 ms 28792 KB Output is correct
5 Correct 387 ms 29616 KB Output is correct
6 Correct 143 ms 27732 KB Output is correct
7 Correct 147 ms 28120 KB Output is correct
8 Correct 155 ms 28272 KB Output is correct
9 Correct 162 ms 28796 KB Output is correct
10 Correct 155 ms 28152 KB Output is correct
11 Correct 268 ms 29244 KB Output is correct
12 Correct 243 ms 28056 KB Output is correct
13 Correct 246 ms 27960 KB Output is correct
14 Correct 285 ms 29224 KB Output is correct
15 Correct 251 ms 28696 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 150 ms 29040 KB Output is correct
18 Correct 8 ms 1228 KB Output is correct
19 Correct 8 ms 1100 KB Output is correct
20 Correct 8 ms 1100 KB Output is correct
21 Correct 9 ms 1100 KB Output is correct
22 Correct 8 ms 1136 KB Output is correct
23 Correct 5 ms 1228 KB Output is correct
24 Correct 5 ms 1100 KB Output is correct
25 Correct 5 ms 1200 KB Output is correct
26 Correct 5 ms 1100 KB Output is correct
27 Correct 5 ms 1100 KB Output is correct
28 Correct 6 ms 1100 KB Output is correct
29 Correct 6 ms 1100 KB Output is correct
30 Correct 6 ms 1180 KB Output is correct
31 Correct 6 ms 1100 KB Output is correct
32 Correct 6 ms 1100 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 4 ms 1100 KB Output is correct
35 Correct 70 ms 2008 KB Output is correct
36 Correct 76 ms 1920 KB Output is correct
37 Correct 90 ms 1972 KB Output is correct
38 Correct 66 ms 1936 KB Output is correct
39 Correct 69 ms 1948 KB Output is correct
40 Correct 63 ms 1904 KB Output is correct
41 Correct 70 ms 1988 KB Output is correct
42 Correct 63 ms 2000 KB Output is correct
43 Correct 62 ms 1848 KB Output is correct
44 Correct 61 ms 1860 KB Output is correct
45 Correct 48 ms 1448 KB Output is correct
46 Correct 51 ms 1476 KB Output is correct
47 Correct 52 ms 1544 KB Output is correct
48 Correct 50 ms 1428 KB Output is correct
49 Correct 54 ms 1504 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Correct 51 ms 2168 KB Output is correct
52 Correct 377 ms 29796 KB Output is correct
53 Correct 370 ms 29244 KB Output is correct
54 Correct 367 ms 27852 KB Output is correct
55 Correct 336 ms 27632 KB Output is correct
56 Correct 361 ms 28360 KB Output is correct
57 Correct 142 ms 27888 KB Output is correct
58 Correct 145 ms 27748 KB Output is correct
59 Correct 148 ms 28064 KB Output is correct
60 Correct 150 ms 27668 KB Output is correct
61 Correct 167 ms 29384 KB Output is correct
62 Correct 246 ms 27832 KB Output is correct
63 Correct 276 ms 29896 KB Output is correct
64 Correct 240 ms 27868 KB Output is correct
65 Correct 251 ms 28404 KB Output is correct
66 Correct 285 ms 29632 KB Output is correct
67 Correct 0 ms 332 KB Output is correct
68 Correct 147 ms 28216 KB Output is correct
69 Correct 522 ms 29480 KB Output is correct
70 Correct 541 ms 30536 KB Output is correct
71 Correct 507 ms 28772 KB Output is correct
72 Correct 529 ms 30068 KB Output is correct
73 Correct 535 ms 29516 KB Output is correct
74 Correct 337 ms 30680 KB Output is correct
75 Correct 318 ms 29084 KB Output is correct
76 Correct 332 ms 30704 KB Output is correct
77 Correct 296 ms 28980 KB Output is correct
78 Correct 308 ms 29240 KB Output is correct
79 Correct 336 ms 30008 KB Output is correct
80 Correct 328 ms 28472 KB Output is correct
81 Correct 317 ms 28264 KB Output is correct
82 Correct 323 ms 29496 KB Output is correct
83 Correct 303 ms 28420 KB Output is correct
84 Correct 0 ms 332 KB Output is correct
85 Correct 217 ms 29292 KB Output is correct