oj.uz

Submission #529227

# Submission time Handle Problem Language Result Execution time Memory
529227 2022-02-22T13:43:52 Z N1NT3NDO Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 564 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';
    }

}

Compilation message

Main.cpp:11: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   11 | #pragma GCC optimization ("O3")
      | 
Main.cpp:12: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   12 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 383 ms 28828 KB Output is correct
2 Correct 379 ms 28596 KB Output is correct
3 Correct 374 ms 28584 KB Output is correct
4 Correct 369 ms 28796 KB Output is correct
5 Correct 384 ms 29700 KB Output is correct
6 Correct 151 ms 27704 KB Output is correct
7 Correct 145 ms 28084 KB Output is correct
8 Correct 144 ms 28276 KB Output is correct
9 Correct 153 ms 28804 KB Output is correct
10 Correct 152 ms 28124 KB Output is correct
11 Correct 311 ms 29244 KB Output is correct
12 Correct 270 ms 28016 KB Output is correct
13 Correct 280 ms 28028 KB Output is correct
14 Correct 274 ms 29336 KB Output is correct
15 Correct 254 ms 28660 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 150 ms 29136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1224 KB Output is correct
2 Correct 8 ms 1160 KB Output is correct
3 Correct 7 ms 1108 KB Output is correct
4 Correct 8 ms 1160 KB Output is correct
5 Correct 7 ms 1116 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 5 ms 1100 KB Output is correct
8 Correct 6 ms 1100 KB Output is correct
9 Correct 5 ms 1112 KB Output is correct
10 Correct 5 ms 1100 KB Output is correct
11 Correct 6 ms 1100 KB Output is correct
12 Correct 8 ms 1164 KB Output is correct
13 Correct 7 ms 1076 KB Output is correct
14 Correct 6 ms 1100 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 1228 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1224 KB Output is correct
2 Correct 8 ms 1160 KB Output is correct
3 Correct 7 ms 1108 KB Output is correct
4 Correct 8 ms 1160 KB Output is correct
5 Correct 7 ms 1116 KB Output is correct
6 Correct 5 ms 1228 KB Output is correct
7 Correct 5 ms 1100 KB Output is correct
8 Correct 6 ms 1100 KB Output is correct
9 Correct 5 ms 1112 KB Output is correct
10 Correct 5 ms 1100 KB Output is correct
11 Correct 6 ms 1100 KB Output is correct
12 Correct 8 ms 1164 KB Output is correct
13 Correct 7 ms 1076 KB Output is correct
14 Correct 6 ms 1100 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 1228 KB Output is correct
18 Correct 69 ms 1984 KB Output is correct
19 Correct 64 ms 1860 KB Output is correct
20 Correct 70 ms 1964 KB Output is correct
21 Correct 64 ms 1884 KB Output is correct
22 Correct 73 ms 1976 KB Output is correct
23 Correct 62 ms 1924 KB Output is correct
24 Correct 65 ms 1936 KB Output is correct
25 Correct 65 ms 1900 KB Output is correct
26 Correct 64 ms 1848 KB Output is correct
27 Correct 68 ms 1984 KB Output is correct
28 Correct 47 ms 1476 KB Output is correct
29 Correct 49 ms 1436 KB Output is correct
30 Correct 51 ms 1444 KB Output is correct
31 Correct 66 ms 1492 KB Output is correct
32 Correct 54 ms 1536 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 51 ms 2116 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 393 ms 29720 KB Output is correct
2 Correct 385 ms 29424 KB Output is correct
3 Correct 336 ms 27832 KB Output is correct
4 Correct 349 ms 27728 KB Output is correct
5 Correct 337 ms 28332 KB Output is correct
6 Correct 137 ms 27860 KB Output is correct
7 Correct 151 ms 27760 KB Output is correct
8 Correct 143 ms 27960 KB Output is correct
9 Correct 144 ms 27756 KB Output is correct
10 Correct 157 ms 29316 KB Output is correct
11 Correct 259 ms 27816 KB Output is correct
12 Correct 263 ms 29712 KB Output is correct
13 Correct 247 ms 27872 KB Output is correct
14 Correct 259 ms 28348 KB Output is correct
15 Correct 266 ms 29624 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 137 ms 28184 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 383 ms 28828 KB Output is correct
2 Correct 379 ms 28596 KB Output is correct
3 Correct 374 ms 28584 KB Output is correct
4 Correct 369 ms 28796 KB Output is correct
5 Correct 384 ms 29700 KB Output is correct
6 Correct 151 ms 27704 KB Output is correct
7 Correct 145 ms 28084 KB Output is correct
8 Correct 144 ms 28276 KB Output is correct
9 Correct 153 ms 28804 KB Output is correct
10 Correct 152 ms 28124 KB Output is correct
11 Correct 311 ms 29244 KB Output is correct
12 Correct 270 ms 28016 KB Output is correct
13 Correct 280 ms 28028 KB Output is correct
14 Correct 274 ms 29336 KB Output is correct
15 Correct 254 ms 28660 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 150 ms 29136 KB Output is correct
18 Correct 8 ms 1224 KB Output is correct
19 Correct 8 ms 1160 KB Output is correct
20 Correct 7 ms 1108 KB Output is correct
21 Correct 8 ms 1160 KB Output is correct
22 Correct 7 ms 1116 KB Output is correct
23 Correct 5 ms 1228 KB Output is correct
24 Correct 5 ms 1100 KB Output is correct
25 Correct 6 ms 1100 KB Output is correct
26 Correct 5 ms 1112 KB Output is correct
27 Correct 5 ms 1100 KB Output is correct
28 Correct 6 ms 1100 KB Output is correct
29 Correct 8 ms 1164 KB Output is correct
30 Correct 7 ms 1076 KB Output is correct
31 Correct 6 ms 1100 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 1228 KB Output is correct
35 Correct 69 ms 1984 KB Output is correct
36 Correct 64 ms 1860 KB Output is correct
37 Correct 70 ms 1964 KB Output is correct
38 Correct 64 ms 1884 KB Output is correct
39 Correct 73 ms 1976 KB Output is correct
40 Correct 62 ms 1924 KB Output is correct
41 Correct 65 ms 1936 KB Output is correct
42 Correct 65 ms 1900 KB Output is correct
43 Correct 64 ms 1848 KB Output is correct
44 Correct 68 ms 1984 KB Output is correct
45 Correct 47 ms 1476 KB Output is correct
46 Correct 49 ms 1436 KB Output is correct
47 Correct 51 ms 1444 KB Output is correct
48 Correct 66 ms 1492 KB Output is correct
49 Correct 54 ms 1536 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 51 ms 2116 KB Output is correct
52 Correct 393 ms 29720 KB Output is correct
53 Correct 385 ms 29424 KB Output is correct
54 Correct 336 ms 27832 KB Output is correct
55 Correct 349 ms 27728 KB Output is correct
56 Correct 337 ms 28332 KB Output is correct
57 Correct 137 ms 27860 KB Output is correct
58 Correct 151 ms 27760 KB Output is correct
59 Correct 143 ms 27960 KB Output is correct
60 Correct 144 ms 27756 KB Output is correct
61 Correct 157 ms 29316 KB Output is correct
62 Correct 259 ms 27816 KB Output is correct
63 Correct 263 ms 29712 KB Output is correct
64 Correct 247 ms 27872 KB Output is correct
65 Correct 259 ms 28348 KB Output is correct
66 Correct 266 ms 29624 KB Output is correct
67 Correct 0 ms 332 KB Output is correct
68 Correct 137 ms 28184 KB Output is correct
69 Correct 514 ms 29356 KB Output is correct
70 Correct 564 ms 30560 KB Output is correct
71 Correct 486 ms 28848 KB Output is correct
72 Correct 512 ms 29940 KB Output is correct
73 Correct 519 ms 29556 KB Output is correct
74 Correct 319 ms 30688 KB Output is correct
75 Correct 314 ms 29240 KB Output is correct
76 Correct 329 ms 30776 KB Output is correct
77 Correct 322 ms 29100 KB Output is correct
78 Correct 277 ms 29244 KB Output is correct
79 Correct 333 ms 30196 KB Output is correct
80 Correct 297 ms 28344 KB Output is correct
81 Correct 292 ms 28268 KB Output is correct
82 Correct 319 ms 29496 KB Output is correct
83 Correct 307 ms 28388 KB Output is correct
84 Correct 0 ms 332 KB Output is correct
85 Correct 210 ms 29472 KB Output is correct