제출 #329248

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
329248		VROOM_VARUN	Examination (JOI19_examination)	C++14	2 / 100	3111 ms	183488 KiB

examination

/*
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

// #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 = 4 * maxn + 5;

struct sparsebit {
  map<int, MPII> fen;
  void upd(int x, int y, int val) {
    for (int i = x; i <= MAX; i += (i & -i)) {
      for (int j = y; j <= MAX; j += (j & -j)) {
        debug(i, j, 1);
        fen[i][j] += val;
      }
    }
  }

  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)) {
        ret += fen[i][j];
      }
    }
    return ret;
  }

  int qry(int a, int b, int c, int d) {
    int ret = 0;
    ret += qry(c, d);
    if (a) ret -= qry(a - 1, d);
    if (b) ret -= qry(c, b - 1);
    if (a and b) ret += qry(a - 1, b - 1);
    return ret;
  }
};

MPII comp;

void compress(VI vals) {
  sort(all(vals));
  vals.resize(unique(all(vals)) - vals.begin());
  for (int i = 0; i < sz(vals); i++) {
    comp[vals[i]] = i + 2;
  }
}

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);

  VI cmp;

  for (int i = 0; i < n; i++) {
    int s, t;
    cin >> s >> t;
    vals[i] = {s + t + 2, s, t};
    cmp.PB(s);
    cmp.PB(t);
  }

  for (int i = 0; i < q; i++) {
    int x, y, z;
    cin >> x >> y >> z;
    qrys[i] = {z + 2, x, y, i};
    cmp.PB(x);
    cmp.PB(y);
  }

  compress(cmp);

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

  sparsebit bit;

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

  int p1 = 0;

  VI ret(q, 0);

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

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

  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

examination.cpp: In member function 'void sparsebit::upd(int, int, int)':
examination.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
examination.cpp:66:9: note: in expansion of macro 'debug'
   66 |         debug(i, j, 1);
      |         ^~~~~

• Subtask 1: 2 / 2
• Subtask 2: 0 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57