oj.uz

Submission #329274

# Submission time Handle Problem Language Result Execution time Memory
329274 2020-11-20T04:23:49 Z VROOM_VARUN Examination (JOI19_examination) C++14
100 / 100
 2625 ms 351736 KB 
/*
ID: varunra2
LANG: C++
TASK: exam
*/

#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
  cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

using ordered_set_less = tree<int, null_type, less<int>, rb_tree_tag,
                              tree_order_statistics_node_update>;
using ordered_set_equal = tree<int, null_type, less_equal<int>, rb_tree_tag,
                               tree_order_statistics_node_update>;
using ordered_map =
    tree<int, int, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
const int RANDOM =
    chrono::high_resolution_clock::now().time_since_epoch().count();
struct chash {
  int operator()(int x) const { return x ^ RANDOM; }
};
gp_hash_table<int, int, chash> table;

// #define int long long

#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second

const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions

const int maxn = 1e5;

const int MAX = maxn + 5;

int cnt = 0;

struct sparsebit {
  vector<gp_hash_table<int, int, chash>> fen;
  int tot = 0;
  void upd(int x, int y, int val) {
    // debug("in upd");
    tot++;
    for (int i = x; i <= MAX; i += (i & -i)) {
      for (int j = y; j <= MAX; j += (j & -j)) {
        // debug(i, j, 1);
        // cnt++;
        fen[i][j] += val;
      }
    }
    // debug("out upd");
  }

  int qry(int x, int y) {
    int ret = 0;
    for (int i = x; i > 0; i -= (i & -i)) {
      for (int j = y; j > 0; j -= (j & -j)) {
        // cnt++;
        ret += fen[i][j];
      }
    }
    return ret;
  }

  int qry(int a, int b, int c, int d) {
    // debug("in big qry");
    int ret = 0;
    ret += tot;
    if (a) ret -= qry(a - 1, d);
    if (b) ret -= qry(c, b - 1);
    if (a and b) ret += qry(a - 1, b - 1);
    // debug("out big qry");
    return ret;
  }

  void init() { fen.resize(MAX + 1); }
};

// MPII comp;
gp_hash_table<int, int, chash> comp[2];

void compress(VII& vals, int ind) {
  // compress math scores then informatics scores seperately
  // debug("in");
  sort(all(vals));
  int cnt = 0;
  for (int i = 0; i < sz(vals); i++) {
    if (vals[i].y == 0) cnt++;
    comp[ind][vals[i].x] = cnt + 1;
  }
  // debug("out");
  // assert(sz(vals) <= maxn);
}

int32_t main() {
  // #ifndef ONLINE_JUDGE
  // freopen("exam.in", "r", stdin);
  // freopen("exam.out", "w", stdout);
  // #endif
  cin.sync_with_stdio(0);
  cin.tie(0);

  int n, q;
  cin >> n >> q;

  VVI vals(n);
  VVI qrys(q);

  VII cmp1, cmp2;

  for (int i = 0; i < n; i++) {
    int s, t;
    cin >> s >> t;
    vals[i] = {s + t, s, t};
    cmp1.PB(MP(s, 1));
    cmp2.PB(MP(t, 1));
  }

  for (int i = 0; i < q; i++) {
    int x, y, z;
    cin >> x >> y >> z;
    qrys[i] = {z, x, y, i};
    cmp1.PB(MP(x, 0));
    cmp2.PB(MP(y, 0));
  }

  compress(cmp1, 0);
  compress(cmp2, 1);

  sort(all(vals));
  sort(all(qrys));

  sparsebit bit;
  bit.init();

  reverse(all(vals));
  reverse(all(qrys));

  int p1 = 0;

  VI ret(q);

  for (int i = 0; i < q; i++) {
    while (p1 < n and vals[p1][0] >= qrys[i][0]) {
      bit.upd(comp[0][vals[p1][1]], comp[1][vals[p1][2]], 1);
      p1++;
    }
    // debug(i);
    ret[qrys[i][3]] =
        bit.qry(comp[0][qrys[i][1]], comp[1][qrys[i][2]], MAX, MAX);
  }

  for (int i = 0; i < q; i++) {
    cout << ret[i] << '\n';
  }

  // debug(cnt);

  return 0;
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 21484 KB Output is correct
2 Correct 23 ms 21504 KB Output is correct
3 Correct 24 ms 21484 KB Output is correct
4 Correct 24 ms 21484 KB Output is correct
5 Correct 24 ms 21484 KB Output is correct
6 Correct 23 ms 21484 KB Output is correct
7 Correct 59 ms 28268 KB Output is correct
8 Correct 61 ms 28396 KB Output is correct
9 Correct 61 ms 28652 KB Output is correct
10 Correct 57 ms 25516 KB Output is correct
11 Correct 48 ms 26540 KB Output is correct
12 Correct 44 ms 22252 KB Output is correct
13 Correct 57 ms 28396 KB Output is correct
14 Correct 58 ms 28524 KB Output is correct
15 Correct 59 ms 28396 KB Output is correct
16 Correct 41 ms 25004 KB Output is correct
17 Correct 54 ms 24108 KB Output is correct
18 Correct 43 ms 21996 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2090 ms 335432 KB Output is correct
2 Correct 2040 ms 335476 KB Output is correct
3 Correct 2043 ms 335020 KB Output is correct
4 Correct 1586 ms 173000 KB Output is correct
5 Correct 774 ms 188776 KB Output is correct
6 Correct 997 ms 37324 KB Output is correct
7 Correct 1239 ms 226756 KB Output is correct
8 Correct 1246 ms 223172 KB Output is correct
9 Correct 1078 ms 191428 KB Output is correct
10 Correct 438 ms 93000 KB Output is correct
11 Correct 725 ms 96532 KB Output is correct
12 Correct 521 ms 36940 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2090 ms 335432 KB Output is correct
2 Correct 2040 ms 335476 KB Output is correct
3 Correct 2043 ms 335020 KB Output is correct
4 Correct 1586 ms 173000 KB Output is correct
5 Correct 774 ms 188776 KB Output is correct
6 Correct 997 ms 37324 KB Output is correct
7 Correct 1239 ms 226756 KB Output is correct
8 Correct 1246 ms 223172 KB Output is correct
9 Correct 1078 ms 191428 KB Output is correct
10 Correct 438 ms 93000 KB Output is correct
11 Correct 725 ms 96532 KB Output is correct
12 Correct 521 ms 36940 KB Output is correct
13 Correct 2562 ms 340248 KB Output is correct
14 Correct 2494 ms 339672 KB Output is correct
15 Correct 2001 ms 335504 KB Output is correct
16 Correct 1823 ms 174764 KB Output is correct
17 Correct 1131 ms 195460 KB Output is correct
18 Correct 1004 ms 37708 KB Output is correct
19 Correct 2450 ms 340164 KB Output is correct
20 Correct 2492 ms 339524 KB Output is correct
21 Correct 1829 ms 255148 KB Output is correct
22 Correct 452 ms 93144 KB Output is correct
23 Correct 813 ms 93640 KB Output is correct
24 Correct 578 ms 36812 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 21484 KB Output is correct
2 Correct 23 ms 21504 KB Output is correct
3 Correct 24 ms 21484 KB Output is correct
4 Correct 24 ms 21484 KB Output is correct
5 Correct 24 ms 21484 KB Output is correct
6 Correct 23 ms 21484 KB Output is correct
7 Correct 59 ms 28268 KB Output is correct
8 Correct 61 ms 28396 KB Output is correct
9 Correct 61 ms 28652 KB Output is correct
10 Correct 57 ms 25516 KB Output is correct
11 Correct 48 ms 26540 KB Output is correct
12 Correct 44 ms 22252 KB Output is correct
13 Correct 57 ms 28396 KB Output is correct
14 Correct 58 ms 28524 KB Output is correct
15 Correct 59 ms 28396 KB Output is correct
16 Correct 41 ms 25004 KB Output is correct
17 Correct 54 ms 24108 KB Output is correct
18 Correct 43 ms 21996 KB Output is correct
19 Correct 2090 ms 335432 KB Output is correct
20 Correct 2040 ms 335476 KB Output is correct
21 Correct 2043 ms 335020 KB Output is correct
22 Correct 1586 ms 173000 KB Output is correct
23 Correct 774 ms 188776 KB Output is correct
24 Correct 997 ms 37324 KB Output is correct
25 Correct 1239 ms 226756 KB Output is correct
26 Correct 1246 ms 223172 KB Output is correct
27 Correct 1078 ms 191428 KB Output is correct
28 Correct 438 ms 93000 KB Output is correct
29 Correct 725 ms 96532 KB Output is correct
30 Correct 521 ms 36940 KB Output is correct
31 Correct 2562 ms 340248 KB Output is correct
32 Correct 2494 ms 339672 KB Output is correct
33 Correct 2001 ms 335504 KB Output is correct
34 Correct 1823 ms 174764 KB Output is correct
35 Correct 1131 ms 195460 KB Output is correct
36 Correct 1004 ms 37708 KB Output is correct
37 Correct 2450 ms 340164 KB Output is correct
38 Correct 2492 ms 339524 KB Output is correct
39 Correct 1829 ms 255148 KB Output is correct
40 Correct 452 ms 93144 KB Output is correct
41 Correct 813 ms 93640 KB Output is correct
42 Correct 578 ms 36812 KB Output is correct
43 Correct 2625 ms 347768 KB Output is correct
44 Correct 2562 ms 351736 KB Output is correct
45 Correct 2550 ms 350156 KB Output is correct
46 Correct 1844 ms 184540 KB Output is correct
47 Correct 1163 ms 198728 KB Output is correct
48 Correct 1085 ms 37964 KB Output is correct
49 Correct 1721 ms 258868 KB Output is correct
50 Correct 1815 ms 257588 KB Output is correct
51 Correct 1618 ms 243508 KB Output is correct
52 Correct 694 ms 128576 KB Output is correct
53 Correct 982 ms 104000 KB Output is correct