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Submission #529226

# Submission time Handle Problem Language Result Execution time Memory
529226 2022-02-22T13:43:13 Z N1NT3NDO Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 592 ms 30776 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);
    int mn = n + 1;
    for(int i = n; i >= 1; i--)
    {

        int val = get(1, 1, 2 * n, l[i], r[i]);
        nxt[i] = val;
        mn = min(mn, nxt[i]);
        nxt[i] = mn;
        up[i][0] = nxt[i];

        upd(1, 1, 2 * n, l[i], r[i], 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 382 ms 28756 KB Output is correct
2 Correct 362 ms 28552 KB Output is correct
3 Correct 428 ms 28532 KB Output is correct
4 Correct 374 ms 28808 KB Output is correct
5 Correct 398 ms 29652 KB Output is correct
6 Correct 139 ms 27792 KB Output is correct
7 Correct 145 ms 28044 KB Output is correct
8 Correct 156 ms 28264 KB Output is correct
9 Correct 159 ms 28728 KB Output is correct
10 Correct 171 ms 28140 KB Output is correct
11 Correct 262 ms 29328 KB Output is correct
12 Correct 289 ms 28036 KB Output is correct
13 Correct 279 ms 28008 KB Output is correct
14 Correct 290 ms 29372 KB Output is correct
15 Correct 282 ms 28724 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 148 ms 29104 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 11 ms 1112 KB Output is correct
3 Correct 10 ms 1100 KB Output is correct
4 Correct 8 ms 1100 KB Output is correct
5 Correct 10 ms 1188 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 6 ms 1100 KB Output is correct
8 Correct 5 ms 1100 KB Output is correct
9 Correct 8 ms 1188 KB Output is correct
10 Correct 4 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 1144 KB Output is correct
14 Correct 6 ms 1168 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 1 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 11 ms 1112 KB Output is correct
3 Correct 10 ms 1100 KB Output is correct
4 Correct 8 ms 1100 KB Output is correct
5 Correct 10 ms 1188 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 6 ms 1100 KB Output is correct
8 Correct 5 ms 1100 KB Output is correct
9 Correct 8 ms 1188 KB Output is correct
10 Correct 4 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 1144 KB Output is correct
14 Correct 6 ms 1168 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 4 ms 1100 KB Output is correct
18 Correct 90 ms 2068 KB Output is correct
19 Correct 68 ms 1856 KB Output is correct
20 Correct 73 ms 2040 KB Output is correct
21 Correct 68 ms 1928 KB Output is correct
22 Correct 73 ms 1988 KB Output is correct
23 Correct 70 ms 2008 KB Output is correct
24 Correct 74 ms 1932 KB Output is correct
25 Correct 63 ms 1928 KB Output is correct
26 Correct 62 ms 1860 KB Output is correct
27 Correct 59 ms 1876 KB Output is correct
28 Correct 50 ms 1476 KB Output is correct
29 Correct 58 ms 1488 KB Output is correct
30 Correct 68 ms 1524 KB Output is correct
31 Correct 50 ms 1504 KB Output is correct
32 Correct 49 ms 1556 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 51 ms 2092 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 449 ms 29752 KB Output is correct
2 Correct 397 ms 29312 KB Output is correct
3 Correct 481 ms 27908 KB Output is correct
4 Correct 342 ms 27676 KB Output is correct
5 Correct 383 ms 28232 KB Output is correct
6 Correct 144 ms 27960 KB Output is correct
7 Correct 150 ms 27764 KB Output is correct
8 Correct 158 ms 27964 KB Output is correct
9 Correct 150 ms 27736 KB Output is correct
10 Correct 170 ms 29264 KB Output is correct
11 Correct 269 ms 27808 KB Output is correct
12 Correct 293 ms 29660 KB Output is correct
13 Correct 273 ms 27860 KB Output is correct
14 Correct 262 ms 28432 KB Output is correct
15 Correct 270 ms 29552 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 153 ms 28212 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 382 ms 28756 KB Output is correct
2 Correct 362 ms 28552 KB Output is correct
3 Correct 428 ms 28532 KB Output is correct
4 Correct 374 ms 28808 KB Output is correct
5 Correct 398 ms 29652 KB Output is correct
6 Correct 139 ms 27792 KB Output is correct
7 Correct 145 ms 28044 KB Output is correct
8 Correct 156 ms 28264 KB Output is correct
9 Correct 159 ms 28728 KB Output is correct
10 Correct 171 ms 28140 KB Output is correct
11 Correct 262 ms 29328 KB Output is correct
12 Correct 289 ms 28036 KB Output is correct
13 Correct 279 ms 28008 KB Output is correct
14 Correct 290 ms 29372 KB Output is correct
15 Correct 282 ms 28724 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 148 ms 29104 KB Output is correct
18 Correct 8 ms 1228 KB Output is correct
19 Correct 11 ms 1112 KB Output is correct
20 Correct 10 ms 1100 KB Output is correct
21 Correct 8 ms 1100 KB Output is correct
22 Correct 10 ms 1188 KB Output is correct
23 Correct 5 ms 1228 KB Output is correct
24 Correct 6 ms 1100 KB Output is correct
25 Correct 5 ms 1100 KB Output is correct
26 Correct 8 ms 1188 KB Output is correct
27 Correct 4 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 1144 KB Output is correct
31 Correct 6 ms 1168 KB Output is correct
32 Correct 6 ms 1100 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 4 ms 1100 KB Output is correct
35 Correct 90 ms 2068 KB Output is correct
36 Correct 68 ms 1856 KB Output is correct
37 Correct 73 ms 2040 KB Output is correct
38 Correct 68 ms 1928 KB Output is correct
39 Correct 73 ms 1988 KB Output is correct
40 Correct 70 ms 2008 KB Output is correct
41 Correct 74 ms 1932 KB Output is correct
42 Correct 63 ms 1928 KB Output is correct
43 Correct 62 ms 1860 KB Output is correct
44 Correct 59 ms 1876 KB Output is correct
45 Correct 50 ms 1476 KB Output is correct
46 Correct 58 ms 1488 KB Output is correct
47 Correct 68 ms 1524 KB Output is correct
48 Correct 50 ms 1504 KB Output is correct
49 Correct 49 ms 1556 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 51 ms 2092 KB Output is correct
52 Correct 449 ms 29752 KB Output is correct
53 Correct 397 ms 29312 KB Output is correct
54 Correct 481 ms 27908 KB Output is correct
55 Correct 342 ms 27676 KB Output is correct
56 Correct 383 ms 28232 KB Output is correct
57 Correct 144 ms 27960 KB Output is correct
58 Correct 150 ms 27764 KB Output is correct
59 Correct 158 ms 27964 KB Output is correct
60 Correct 150 ms 27736 KB Output is correct
61 Correct 170 ms 29264 KB Output is correct
62 Correct 269 ms 27808 KB Output is correct
63 Correct 293 ms 29660 KB Output is correct
64 Correct 273 ms 27860 KB Output is correct
65 Correct 262 ms 28432 KB Output is correct
66 Correct 270 ms 29552 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 153 ms 28212 KB Output is correct
69 Correct 532 ms 29368 KB Output is correct
70 Correct 553 ms 30540 KB Output is correct
71 Correct 584 ms 28856 KB Output is correct
72 Correct 579 ms 29956 KB Output is correct
73 Correct 592 ms 29556 KB Output is correct
74 Correct 358 ms 30728 KB Output is correct
75 Correct 353 ms 29112 KB Output is correct
76 Correct 375 ms 30776 KB Output is correct
77 Correct 290 ms 28984 KB Output is correct
78 Correct 353 ms 29300 KB Output is correct
79 Correct 334 ms 30032 KB Output is correct
80 Correct 375 ms 28360 KB Output is correct
81 Correct 314 ms 28264 KB Output is correct
82 Correct 344 ms 29456 KB Output is correct
83 Correct 326 ms 28424 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 252 ms 29528 KB Output is correct