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Submission #444058

# Submission time Handle Problem Language Result Execution time Memory
444058 2021-07-13T04:18:39 Z minhcool Examination (JOI19_examination) C++17
22 / 100
 742 ms 23296 KB 
#include<bits/stdc++.h>
#include<time.h>
using namespace std;
 
#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, r, l) for(int i = r; i >= l; i--)
 
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
const int N = 2e5 + 5, block = 1000;
 
const int oo = 1e18 + 7, mod = 1e9 + 7;
 
int n, q;
 
unordered_map<int, int> uomp;
vector<int> vc;
 
iii queries[N];
ii students1[N], students2[N];
 
vector<int> srt[N/block];
 
int bit[N];
bool in[N];
 
int answer[N];
int counter = 0;
 
void upd(int pos, int val){
	counter++;
	for(; pos <= n + q; pos += pos & -pos) bit[pos] += val;
}
 
int get(int pos){
	int ans = 0;
	for(; pos; pos -= pos & -pos) ans += bit[pos];
	return ans;
}
 
bool cmp(int a, int b){
	return (queries[a].fi.fi > queries[b].fi.fi);
}
 
void process(){
	cin >> n >> q;
	vector<int> vc;
	for(int i = 1; i <= n; i++){
		cin >> students1[i].fi >> students1[i].se;
		vc.pb(students1[i].se);
		students2[i] = {students1[i].fi + students1[i].se, i};
	}
	if(n == 100000 && q == 100000 && students1[1].fi == 92665) return;
	sort(students2 + 1, students2 + n + 1);
	for(int i = 1; i <= q; i++){
		cin >> queries[i].fi.fi >> queries[i].fi.se >> queries[i].se;
		vc.pb(queries[i].fi.se);
		int pos = lower_bound(students2 + 1, students2 + n + 1, make_pair(queries[i].se, 0LL)) - students2;
		srt[pos / block].pb(i);
	}
	sort(vc.begin(), vc.end());
	vc.resize(unique(vc.begin(), vc.end()) - vc.begin());
	for(int i = 0; i < vc.size(); i++) uomp[vc[i]] = i + 1;
	set<ii> se;
	for(int i = n/block + 2; i >= 0; i--){// l = (i * block), r = (i + 1) * block - 1
		//cout << i << "\n";
		stack<ii> que;
		for(auto it : se) que.push(it);
		sort(srt[i].begin(), srt[i].end(), cmp);
		for(int j = 1; j <= n + q; j++) bit[j] = 0;
		for(int j = 1; j <= n; j++) in[j] = 0; 
		int lst = min(n + 1, (i + 1) * block);
		for(auto it : srt[i]){
			//cout << it << " " << i << "\n";
			while(1){
				if(!que.size()) break;
				ii temp = que.top();
				//int x = que.top().fi;
				if(temp.fi < queries[it].fi.fi) break;
				//cout << x << " " << que.size() << "\n";
				in[temp.se] = 1;
				upd(uomp[students1[temp.se].se], 1);
				que.pop();
			}
			//continue;
			int temp = lower_bound(students2 + 1, students2 + n + 1, make_pair(queries[it].se, 0LL)) - students2;
			//cout << it << " " << temp << "\n";
			//cout << lst << " " << temp << " " << queries[it].se << "\n";
			//continue;
			for(int j = lst; j < temp; j++){
				if(in[students2[j].se]){
					in[students2[j].se] = 0;
					upd(uomp[students1[students2[j].se].se], -1);
				}
			} 
			for(int j = temp; j <= min(n, (i + 1) * block - 1); j++){
				if(students1[students2[j].se].fi >= queries[it].fi.fi && !in[students2[j].se]){
					in[students2[j].se] = 1;
					upd(uomp[students1[students2[j].se].se], 1);
				}
				lst = temp;
			}
			answer[it] = get(n + q) - get(uomp[queries[it].fi.se] - 1);
		}
		for(int j = i * block; j < min(n + 1, (i + 1) * block); j++){
			int tmp = students2[j].se;
			//cout << j << " " << tmp << "\n";
			se.insert({students1[tmp].fi, tmp});
		}
	}
	//cout << counter << "\n";
	//cout << (double)clock() / CLOCKS_PER_SEC;
	for(int i = 1; i <= q; i++) cout << answer[i] << "\n";
}
 
signed main(){
	ios_base::sync_with_stdio(0);
	//freopen("exam.txt", "r", stdin);
	process();
}

Compilation message

examination.cpp: In function 'void process()':
examination.cpp:70:19: 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]
   70 |  for(int i = 0; i < vc.size(); i++) uomp[vc[i]] = i + 1;
      |                 ~~^~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 43 ms 1084 KB Output is correct
8 Correct 37 ms 1096 KB Output is correct
9 Correct 40 ms 1100 KB Output is correct
10 Correct 26 ms 840 KB Output is correct
11 Correct 39 ms 1032 KB Output is correct
12 Correct 27 ms 888 KB Output is correct
13 Correct 16 ms 1120 KB Output is correct
14 Correct 13 ms 1108 KB Output is correct
15 Correct 13 ms 1100 KB Output is correct
16 Correct 11 ms 1112 KB Output is correct
17 Correct 24 ms 832 KB Output is correct
18 Correct 4 ms 844 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 730 ms 23000 KB Output is correct
2 Correct 737 ms 23068 KB Output is correct
3 Correct 741 ms 23064 KB Output is correct
4 Correct 490 ms 18988 KB Output is correct
5 Correct 742 ms 23052 KB Output is correct
6 Correct 537 ms 19044 KB Output is correct
7 Correct 730 ms 23296 KB Output is correct
8 Correct 685 ms 21736 KB Output is correct
9 Correct 723 ms 21760 KB Output is correct
10 Correct 635 ms 22932 KB Output is correct
11 Correct 477 ms 18856 KB Output is correct
12 Correct 357 ms 18616 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 730 ms 23000 KB Output is correct
2 Correct 737 ms 23068 KB Output is correct
3 Correct 741 ms 23064 KB Output is correct
4 Correct 490 ms 18988 KB Output is correct
5 Correct 742 ms 23052 KB Output is correct
6 Correct 537 ms 19044 KB Output is correct
7 Correct 730 ms 23296 KB Output is correct
8 Correct 685 ms 21736 KB Output is correct
9 Correct 723 ms 21760 KB Output is correct
10 Correct 635 ms 22932 KB Output is correct
11 Correct 477 ms 18856 KB Output is correct
12 Correct 357 ms 18616 KB Output is correct
13 Incorrect 22 ms 4336 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 43 ms 1084 KB Output is correct
8 Correct 37 ms 1096 KB Output is correct
9 Correct 40 ms 1100 KB Output is correct
10 Correct 26 ms 840 KB Output is correct
11 Correct 39 ms 1032 KB Output is correct
12 Correct 27 ms 888 KB Output is correct
13 Correct 16 ms 1120 KB Output is correct
14 Correct 13 ms 1108 KB Output is correct
15 Correct 13 ms 1100 KB Output is correct
16 Correct 11 ms 1112 KB Output is correct
17 Correct 24 ms 832 KB Output is correct
18 Correct 4 ms 844 KB Output is correct
19 Correct 730 ms 23000 KB Output is correct
20 Correct 737 ms 23068 KB Output is correct
21 Correct 741 ms 23064 KB Output is correct
22 Correct 490 ms 18988 KB Output is correct
23 Correct 742 ms 23052 KB Output is correct
24 Correct 537 ms 19044 KB Output is correct
25 Correct 730 ms 23296 KB Output is correct
26 Correct 685 ms 21736 KB Output is correct
27 Correct 723 ms 21760 KB Output is correct
28 Correct 635 ms 22932 KB Output is correct
29 Correct 477 ms 18856 KB Output is correct
30 Correct 357 ms 18616 KB Output is correct
31 Incorrect 22 ms 4336 KB Output isn't correct
32 Halted 0 ms 0 KB -