oj.uz

답안 #1079874

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1079874 2024-08-29T02:52:55 Z vjudge1 Examination (JOI19_examination) C++17
100 / 100
 325 ms 49228 KB 
#include<bits/stdc++.h>
#define all(x) (x).begin() , (x).end()
#define pll pair<long long, long long>
#define pii pair<int , int>
#define fi first
#define se second
#define bit(i,j) ((j >> i) & 1)
using namespace std;
 
#define int long long
const long long inf = 1e18+1;
const int mod = 1e9+7;
const int MAXN = 3e6+100;
 
struct BIT {
  int b[MAXN], n;
 
  void init(int _n) {
    n = _n;
    for(int i = 0 ; i <= n ; ++i) b[i] = 0;
  }
  inline int lowbit(int x) { return x & (-x); }
  void update(int x, int v) {
    for(int i = x ; i <= n ; i += lowbit(i)) b[i] += v;
  }
  int query(int x) {
    int ans = 0;
    for(int i = x ; i > 0 ; i -= lowbit(i)) ans += b[i];
    return ans;
  }
} bit;
struct Pt{
	int x , y , z , i , t;	
};
Pt a[MAXN];
int ans[MAXN];
void cdq(int l , int r){
	if(l == r) return ;
	int mid = l + r >> 1;
	cdq(l , mid) ; cdq(mid+1 , r);
	int i = l, j = mid+1 ,sum = 0;
	vector<int> record;
	vector<Pt> tmp;
	while(i <= mid && j <= r){
		if(a[i].y > a[j].y) {
			if(a[i].t == 0) bit.update(a[i].z , 1) , sum ++ , record.push_back(a[i].z);
			tmp.push_back(a[i++]);
		}
		else{
			ans[a[j].i] += sum - bit.query(a[j].z);
			tmp.push_back(a[j++]);
		}
	}
	while(i <= mid) tmp.push_back(a[i++]);
	while(j <= r) ans[a[j].i] += sum - bit.query(a[j].z), tmp.push_back(a[j++]);
	for(int i = l ; i <= r ; i++) a[i] = tmp[i-l];
	for(auto i : record) bit.update(i , -1);
	vector<int> ().swap(record);
  	vector<Pt> ().swap(tmp);
}
map<int , int> mp;
int32_t main(){
  	//freopen("KNIGHTGAME.inp", "r", stdin);
	//freopen("KNIGHTGAME.out", "w", stdout);
	ios_base::sync_with_stdio(0); cin.tie(0);
 
	int n , q; cin >> n >> q;
	vector<int> comp;
	for(int i = 1 ; i <= n ; i++) cin >> a[i].x >> a[i].y, a[i].i = i , a[i].z = a[i].x + a[i].y, a[i].t = 0 , comp.push_back(a[i].z);
	for(int j = 1 ; j <= q ; j ++){
		int x , y , z; cin>> x >> y >> z;
		a[n + j] = {x-1 , y-1 , z-1 , n + j , 1};
		comp.push_back(z-1);
	}
	sort(all(comp));
	comp.erase(unique(comp.begin() , comp.end()) , comp.end());
	for(int i = 0 ; i < comp.size() ;i++) mp[comp[i]] = i+1;
	for(int i = 1 ; i <= n + q ; i++) a[i].z = mp[a[i].z];
	
	sort(a+1, a+n+q+1, [&](auto a, auto b) { 
      return (a.x == b.x ? (a.y == b.y ? a.z < b.z : a.y < b.y) : a.x > b.x); 
  	}); 
	bit.init(n + q);
	cdq(1 , n + q);
	for(int i = 1 ; i <= q ; i++) cout << ans[i + n] << "\n";
 
	return 0;
}

Compilation message

examination.cpp: In function 'void cdq(long long int, long long int)':
examination.cpp:39:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   39 |  int mid = l + r >> 1;
      |            ~~^~~
examination.cpp: In function 'int32_t main()':
examination.cpp:77:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |  for(int i = 0 ; i < comp.size() ;i++) mp[comp[i]] = i+1;
      |                  ~~^~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 0 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 6 ms 5400 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 6 ms 5400 KB Output is correct
10 Correct 6 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 5 ms 5240 KB Output is correct
14 Correct 6 ms 5224 KB Output is correct
15 Correct 5 ms 5224 KB Output is correct
16 Correct 4 ms 5252 KB Output is correct
17 Correct 6 ms 5408 KB Output is correct
18 Correct 3 ms 5084 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 242 ms 41128 KB Output is correct
2 Correct 233 ms 41108 KB Output is correct
3 Correct 233 ms 41120 KB Output is correct
4 Correct 210 ms 40524 KB Output is correct
5 Correct 177 ms 40608 KB Output is correct
6 Correct 134 ms 36516 KB Output is correct
7 Correct 238 ms 40596 KB Output is correct
8 Correct 223 ms 41124 KB Output is correct
9 Correct 220 ms 40412 KB Output is correct
10 Correct 168 ms 39844 KB Output is correct
11 Correct 196 ms 39844 KB Output is correct
12 Correct 112 ms 36516 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 242 ms 41128 KB Output is correct
2 Correct 233 ms 41108 KB Output is correct
3 Correct 233 ms 41120 KB Output is correct
4 Correct 210 ms 40524 KB Output is correct
5 Correct 177 ms 40608 KB Output is correct
6 Correct 134 ms 36516 KB Output is correct
7 Correct 238 ms 40596 KB Output is correct
8 Correct 223 ms 41124 KB Output is correct
9 Correct 220 ms 40412 KB Output is correct
10 Correct 168 ms 39844 KB Output is correct
11 Correct 196 ms 39844 KB Output is correct
12 Correct 112 ms 36516 KB Output is correct
13 Correct 287 ms 43756 KB Output is correct
14 Correct 280 ms 43664 KB Output is correct
15 Correct 234 ms 41104 KB Output is correct
16 Correct 261 ms 41892 KB Output is correct
17 Correct 229 ms 41368 KB Output is correct
18 Correct 137 ms 36048 KB Output is correct
19 Correct 284 ms 44260 KB Output is correct
20 Correct 287 ms 43856 KB Output is correct
21 Correct 280 ms 43668 KB Output is correct
22 Correct 170 ms 40604 KB Output is correct
23 Correct 194 ms 39824 KB Output is correct
24 Correct 112 ms 36476 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 0 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 6 ms 5400 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 6 ms 5400 KB Output is correct
10 Correct 6 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 5 ms 5240 KB Output is correct
14 Correct 6 ms 5224 KB Output is correct
15 Correct 5 ms 5224 KB Output is correct
16 Correct 4 ms 5252 KB Output is correct
17 Correct 6 ms 5408 KB Output is correct
18 Correct 3 ms 5084 KB Output is correct
19 Correct 242 ms 41128 KB Output is correct
20 Correct 233 ms 41108 KB Output is correct
21 Correct 233 ms 41120 KB Output is correct
22 Correct 210 ms 40524 KB Output is correct
23 Correct 177 ms 40608 KB Output is correct
24 Correct 134 ms 36516 KB Output is correct
25 Correct 238 ms 40596 KB Output is correct
26 Correct 223 ms 41124 KB Output is correct
27 Correct 220 ms 40412 KB Output is correct
28 Correct 168 ms 39844 KB Output is correct
29 Correct 196 ms 39844 KB Output is correct
30 Correct 112 ms 36516 KB Output is correct
31 Correct 287 ms 43756 KB Output is correct
32 Correct 280 ms 43664 KB Output is correct
33 Correct 234 ms 41104 KB Output is correct
34 Correct 261 ms 41892 KB Output is correct
35 Correct 229 ms 41368 KB Output is correct
36 Correct 137 ms 36048 KB Output is correct
37 Correct 284 ms 44260 KB Output is correct
38 Correct 287 ms 43856 KB Output is correct
39 Correct 280 ms 43668 KB Output is correct
40 Correct 170 ms 40604 KB Output is correct
41 Correct 194 ms 39824 KB Output is correct
42 Correct 112 ms 36476 KB Output is correct
43 Correct 325 ms 49060 KB Output is correct
44 Correct 322 ms 49052 KB Output is correct
45 Correct 313 ms 48560 KB Output is correct
46 Correct 304 ms 48556 KB Output is correct
47 Correct 268 ms 49068 KB Output is correct
48 Correct 141 ms 36004 KB Output is correct
49 Correct 312 ms 48552 KB Output is correct
50 Correct 312 ms 49228 KB Output is correct
51 Correct 317 ms 49052 KB Output is correct
52 Correct 260 ms 49124 KB Output is correct
53 Correct 204 ms 42316 KB Output is correct