제출 #576931

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
576931		MilosMilutinovic	Radio (COCI22_radio)	C++14	110 / 110	1439 ms	246228 KiB

Main

/**
 *    author:  wxhtzdy
 *    created: 13.06.2022 22:14:19
**/
#include <bits/stdc++.h>

using namespace std;
        
const int MAX = 1000005;

const int inf = (int) 1e9;

int mn[8 * MAX];

void build(int node, int l, int r) {
  mn[node] = inf;
  if (l == r) {
    return;
  }
  int mid = l + r >> 1;
  build(node * 2, l, mid);
  build(node * 2 + 1, mid + 1, r);
}

void modify(int node, int l, int r, int i, int v) {
  if (l == r) {
    mn[node] = v;
    return;
  }
  int mid = l + r >> 1;
  if (i <= mid) {
    modify(node * 2, l, mid, i, v);
  } else {
    modify(node * 2 + 1, mid + 1, r, i, v);
  }
  mn[node] = min(mn[node * 2], mn[node * 2 + 1]);
}

int get(int node, int l, int r, int ll, int rr) {
  if (l > r || l > rr || r < ll) {
    return inf;
  }
  if (ll <= l && r <= rr) {
    return mn[node];
  }
  int mid = l + r >> 1;
  return min(get(node * 2, l, mid, ll, rr), get(node * 2 + 1, mid + 1, r, ll, rr));
} 

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  vector<vector<int>> d(MAX);
  for (int i = 2; i < MAX; i++) {
    if (d[i].empty()) {
      for (int j = i; j < MAX; j += i) {
        d[j].push_back(i);
      }
    }
  }                    
  build(1, 1, MAX);
  vector<multiset<int>> f(MAX);
  for (int i = 0; i < MAX; i++) {
    f[i].insert(inf);
  }
  function<void(int, int)> Add_seg = [&](int l, int r) {
    f[l].insert(r);
    modify(1, 1, MAX, l, *f[l].begin());
  };
  function<void(int, int)> Del_seg = [&](int l, int r) {
    assert(f[l].find(r) != f[l].end());
    f[l].erase(f[l].find(r));
    modify(1, 1, MAX, l, *f[l].begin());
  };
  vector<multiset<int>> at(MAX);
  function<void(int)> Del = [&](int x) {
    for (int i : d[x]) {
      auto it = at[i].find(x);
      if (it != at[i].begin()) {
        Del_seg(*prev(it), x);   
      }
      if (it != prev(at[i].end())) {
        Del_seg(x, *next(it));
      }
      if (it != at[i].begin() && it != prev(at[i].end())) {
        Add_seg(*prev(it), *next(it));
      }
      at[i].erase(it);
    }
  };
  function<void(int)> Add = [&](int x) {
    for (int i : d[x]) {
      auto it = at[i].lower_bound(x);
      if (it != at[i].begin() && it != at[i].end()) {
        Del_seg(*prev(it), *it);
      }
      if (it != at[i].begin()) {
        Add_seg(*prev(it), x);
      }             
      if (it != at[i].end()) {
        Add_seg(x, *it);
      }
      at[i].insert(x);
    }
  };
  int n, q;
  cin >> n >> q;
  vector<bool> act(MAX);
  while (q--) {
    char foo;
    cin >> foo;
    if (foo == 'S') {
      int x;
      cin >> x;
      if (act[x]) {
        Del(x);
      } else {
        Add(x);
      }
      act[x] = !act[x];
    } else {
      int l, r;
      cin >> l >> r;
      cout << (get(1, 1, MAX, l, r) <= r ? "DA" : "NE") << '\n';
    }
  }                                                                      
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void build(int, int, int)':
Main.cpp:20:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   20 |   int mid = l + r >> 1;
      |             ~~^~~
Main.cpp: In function 'void modify(int, int, int, int, int)':
Main.cpp:30:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |   int mid = l + r >> 1;
      |             ~~^~~
Main.cpp: In function 'int get(int, int, int, int, int)':
Main.cpp:46:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   46 |   int mid = l + r >> 1;
      |             ~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 70 / 70