Submission #759004

#	Time	Username	Problem	Language	Result	Execution time	Memory
759004		Sam_a17	Examination (JOI19_examination)	C++17	0 / 100	932 ms	1048576 KiB

examination

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;
 
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
 
#define sz(x) (int)x.size()
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt __builtin_popcount
 
#define pb push_back
#define popf pop_front
#define popb pop_back
#define ld long double
#define ll long long

void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'
 
// Indexed Set  
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
// template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(Tree <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(deque <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
 

// for random generations
mt19937 myrand(chrono::steady_clock::now().time_since_epoch().count());
// mt19937 myrand(131);
 
// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};
 
// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();
 
  if(str == "input") {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
  } else if(str != "") {
    freopen((str + ".in").c_str(), "r", stdin);
    freopen((str + ".out").c_str(), "w", stdout);
  }
}
const int N = 1e5 + 500;
vector<pair<pair<int, int>, int>> adj[N];
vector<int> vi[N];
int n, q;

struct fenwick2 {
  int n;
  vector<int> tr;

  void init(int m) {
    n = m, tr.assign(m + 1, 0);
  }

  void upd(int u, int value) {
    while(u <= n) {
      tr[u] += value;
      u += u & (-u);
    }
  }
  
  int qry(int u) {
    int s = 0;
    while(u > 0) {
      s += tr[u];
      u -= u & (-u);
    }
    return s;
  }
  
  int sum(int l, int r) {
    return qry(r) - qry(l - 1);
  }
} fft[N];

struct fenwick {
  int n;
  void init(int m) {
    n = m;
  }

  void upd(int u, int value) {
    while(u <= n) {
      auto it = lower_bound(all(vi[u]), value);
      int curr = it - vi[u].begin() + 1;
      fft[u].upd(curr, 1);
      u += u & (-u);
    }
  }

  void add(int u, int value) {
    while(u <= n) {
      vi[u].push_back(value);
      u += u & (-u);
    }
  }
  
  int qry(int u, int up) {
    int s = 0;
    while(u > 0) {
      auto it = lower_bound(all(vi[u]), up);
      if(it != vi[u].end()) {
        int curr = it - vi[u].begin() + 1;
        s += fft[u].sum(curr, sz(fft[u].tr) - 2);
      }
      u -= u & (-u);
    }
    return s;
  }
  
  int sum(int l, int r, int value) {
    return qry(r, value) - qry(l - 1, value);
  }
} ft;

void solve_() {
  cin >> n >> q;
 
  vector<pair<int, pair<int, int>>> vec;

  vector<int> compress;
  for(int i = 1; i <= n; i++) {
    int a, b; cin >> a >> b;
    vec.push_back({a + b, {a, b}});
    compress.push_back(a);
    compress.push_back(b);
  }

  sort(all(vec));
  // sort(all(compress));
  // uniq(compress);
  ft.init(N - 100);

  for(auto i: vec) {
    ft.add(i.second.first, i.second.second);
  }

  for(int i = 0; i < N; i++) {
    sort(all(vi[i]));
    uniq(vi[i]);
    fft[i].init(sz(vi[i]) + 2);
  }

  for(int i = 1; i <= q; i++) {
    int x, y, z; cin >> x >> y >> z;
    auto it = lower_bound(all(vec), make_pair(z, make_pair(0, 0)));
    if(it != vec.end()) {
      adj[it - vec.begin()].push_back({{x, y}, i});
    }
  }

  vector<long long> answ(q + 1, 0);
  for(int i = n - 1; i >= 0; i--) {
    // ft.upd(vec[i].second.first, vec[i].second.second);
    // for(auto j: adj[i]) {
      // answ[j.second] = ft.sum(j.first.first, N - 201, j.first.second);
    // }
  }

  for(int i = 1; i <= q; i++) {
    cout << answ[i] << '\n';
  }
}

int main() {
  setIO();

  auto solve = [&](int test_case)-> void {
    for(int i = 1; i <= test_case; i++) {
      solve_();
    }
  };
 
  int test_cases = 1;
  // cin >> test_cases;
  solve(test_cases);
 
  return 0;
} 

Compilation message (stderr)

examination.cpp: In function 'void setIO(std::string)':
examination.cpp:76:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:79:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:80:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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