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Submission #484378

# Submission time Handle Problem Language Result Execution time Memory
484378 2021-11-03T05:39:24 Z xiaowuc1 Examination (JOI19_examination) C++17
100 / 100
 527 ms 41440 KB 
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <vector>

using namespace std;

// BEGIN NO SAD
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
typedef vector<int> vi;
#define f first
#define s second
// END NO SAD

template<class Fun>
class y_combinator_result {
  Fun fun_;
public:
  template<class T>
  explicit y_combinator_result(T &&fun): fun_(std::forward<T>(fun)) {}

  template<class ...Args>
  decltype(auto) operator()(Args &&...args) {
    return fun_(std::ref(*this), std::forward<Args>(args)...);
  }
};

template<class Fun>
decltype(auto) y_combinator(Fun &&fun) {
  return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun));
}

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<vector<ll>> matrix;

struct koosaga {
  vector<vector<int>> ragetree;
  int SZ;
  koosaga(int n) {
    SZ = 1;
    while(SZ < n) SZ *= 2;
    ragetree.resize(2*SZ);
  }
  void upd(int idx, int val) {
    idx += SZ;
    while(idx) {
      ragetree[idx].pb(val);
      idx /= 2;
    }
  }
  int qry(const vector<int>& v, int x) {
    return ub(all(v), x) - v.begin();
  }
  int qry(int lhs, int rhs, int x) {
    int ret = 0;
    lhs += SZ;
    rhs += SZ;
    while(lhs <= rhs) {
      if(lhs%2) ret += qry(ragetree[lhs++], x);
      if(rhs%2==0) ret += qry(ragetree[rhs--], x);
      lhs /= 2;
      rhs /= 2;
    }
    return ret;
  }
};

void gen(koosaga& koo, vector<pii>& v) {
  sort(all(v));
  for(auto[y,x]: v) {
    koo.upd(x, y);
  }
}

void solve() {
  int n, q;
  cin >> n >> q;
  vector<pii> sump, yp;
  vector<int> xs;
  for(int i = 0; i < n; i++) {
    int x, y;
    cin >> x >> y;
    xs.pb(x);
    sump.eb(x+y, x);
    yp.eb(y, x);
  }
  sort(all(xs));
  xs.erase(unique(all(xs)), xs.end());
  koosaga ykoo(sz(xs)), sumkoo(sz(xs));
  for(auto& [_, x]: sump) x = lb(all(xs), x) - xs.begin();
  for(auto& [_, x]: yp) x = lb(all(xs), x) - xs.begin();
  gen(ykoo, yp);
  gen(sumkoo, sump);
  while(q--) {
    int x, y, z;
    cin >> x >> y >> z;
    if(x+y >= z) {
      // the boring case
      int ret = n;
      int xidx = ub(all(xs), x-1) - xs.begin();
      ret -= ykoo.qry(0, xidx-1, 2e9);
      ret -= ykoo.qry(xidx, sz(xs)-1, y-1);
      cout << ret << "\n";
    }
    else {
      int ret = n;
      int xidx = ub(all(xs), x-1) - xs.begin();
      ret -= ykoo.qry(0, xidx-1, 2e9);
      int xidx2 = ub(all(xs), z-y) - xs.begin();
      ret -= sumkoo.qry(xidx, xidx2-1, z-1);
      ret -= ykoo.qry(xidx2, sz(xs)-1, y-1);
      cout << ret << "\n";
    }
  }
}

// what would chika do
// are there edge cases (N=1?)
// are array sizes proper (scaled by proper constant, for example 2* for koosaga tree)
// integer overflow?
// DS reset properly between test cases
// are you doing geometry in floating points
// are you not using modint when you should

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  solve();
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 8 ms 1476 KB Output is correct
8 Correct 8 ms 1520 KB Output is correct
9 Correct 7 ms 1484 KB Output is correct
10 Correct 7 ms 1496 KB Output is correct
11 Correct 4 ms 704 KB Output is correct
12 Correct 3 ms 588 KB Output is correct
13 Correct 7 ms 1484 KB Output is correct
14 Correct 7 ms 1496 KB Output is correct
15 Correct 7 ms 1484 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 6 ms 1484 KB Output is correct
18 Correct 2 ms 460 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 349 ms 31824 KB Output is correct
2 Correct 357 ms 31664 KB Output is correct
3 Correct 357 ms 31804 KB Output is correct
4 Correct 286 ms 31792 KB Output is correct
5 Correct 109 ms 10044 KB Output is correct
6 Correct 75 ms 9388 KB Output is correct
7 Correct 330 ms 31800 KB Output is correct
8 Correct 337 ms 31856 KB Output is correct
9 Correct 305 ms 31748 KB Output is correct
10 Correct 63 ms 5424 KB Output is correct
11 Correct 226 ms 31572 KB Output is correct
12 Correct 43 ms 4728 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 349 ms 31824 KB Output is correct
2 Correct 357 ms 31664 KB Output is correct
3 Correct 357 ms 31804 KB Output is correct
4 Correct 286 ms 31792 KB Output is correct
5 Correct 109 ms 10044 KB Output is correct
6 Correct 75 ms 9388 KB Output is correct
7 Correct 330 ms 31800 KB Output is correct
8 Correct 337 ms 31856 KB Output is correct
9 Correct 305 ms 31748 KB Output is correct
10 Correct 63 ms 5424 KB Output is correct
11 Correct 226 ms 31572 KB Output is correct
12 Correct 43 ms 4728 KB Output is correct
13 Correct 440 ms 31792 KB Output is correct
14 Correct 400 ms 31788 KB Output is correct
15 Correct 366 ms 31792 KB Output is correct
16 Correct 363 ms 31792 KB Output is correct
17 Correct 140 ms 9904 KB Output is correct
18 Correct 81 ms 9260 KB Output is correct
19 Correct 464 ms 31732 KB Output is correct
20 Correct 438 ms 31920 KB Output is correct
21 Correct 431 ms 31780 KB Output is correct
22 Correct 64 ms 5400 KB Output is correct
23 Correct 227 ms 31748 KB Output is correct
24 Correct 41 ms 4784 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 8 ms 1476 KB Output is correct
8 Correct 8 ms 1520 KB Output is correct
9 Correct 7 ms 1484 KB Output is correct
10 Correct 7 ms 1496 KB Output is correct
11 Correct 4 ms 704 KB Output is correct
12 Correct 3 ms 588 KB Output is correct
13 Correct 7 ms 1484 KB Output is correct
14 Correct 7 ms 1496 KB Output is correct
15 Correct 7 ms 1484 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 6 ms 1484 KB Output is correct
18 Correct 2 ms 460 KB Output is correct
19 Correct 349 ms 31824 KB Output is correct
20 Correct 357 ms 31664 KB Output is correct
21 Correct 357 ms 31804 KB Output is correct
22 Correct 286 ms 31792 KB Output is correct
23 Correct 109 ms 10044 KB Output is correct
24 Correct 75 ms 9388 KB Output is correct
25 Correct 330 ms 31800 KB Output is correct
26 Correct 337 ms 31856 KB Output is correct
27 Correct 305 ms 31748 KB Output is correct
28 Correct 63 ms 5424 KB Output is correct
29 Correct 226 ms 31572 KB Output is correct
30 Correct 43 ms 4728 KB Output is correct
31 Correct 440 ms 31792 KB Output is correct
32 Correct 400 ms 31788 KB Output is correct
33 Correct 366 ms 31792 KB Output is correct
34 Correct 363 ms 31792 KB Output is correct
35 Correct 140 ms 9904 KB Output is correct
36 Correct 81 ms 9260 KB Output is correct
37 Correct 464 ms 31732 KB Output is correct
38 Correct 438 ms 31920 KB Output is correct
39 Correct 431 ms 31780 KB Output is correct
40 Correct 64 ms 5400 KB Output is correct
41 Correct 227 ms 31748 KB Output is correct
42 Correct 41 ms 4784 KB Output is correct
43 Correct 472 ms 41440 KB Output is correct
44 Correct 480 ms 41084 KB Output is correct
45 Correct 458 ms 41188 KB Output is correct
46 Correct 389 ms 41180 KB Output is correct
47 Correct 117 ms 10032 KB Output is correct
48 Correct 80 ms 9260 KB Output is correct
49 Correct 481 ms 40952 KB Output is correct
50 Correct 457 ms 41008 KB Output is correct
51 Correct 527 ms 40872 KB Output is correct
52 Correct 74 ms 5420 KB Output is correct
53 Correct 244 ms 41140 KB Output is correct