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Submission #444105

# Submission time Handle Problem Language Result Execution time Memory
444105 2021-07-13T06:07:13 Z minhcool Examination (JOI19_examination) C++17
22 / 100
 3000 ms 23804 KB 
#pragma GCC optimize("Ofast")
#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 = 1100;
 
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[i].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);
		vector<ii> vc1;
		for(int j = max(1LL, i * block); j < min(n + 1, (i + 1) * block); j++){
			int tmp = students2[j].se;
			//if(!tmp) cout << j << " " << tmp << "\n";
			vc1.pb({students1[tmp].fi, tmp});
		}
		sort(vc1.begin(), vc1.end());
		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();
				}
			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 < lst; 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;
			while(1){
				if(!vc1.size()) break;
				if(vc1.back().fi < queries[it].fi.fi) break;
				int ind = vc1.back().se;
				if(!in[ind] && students1[ind].fi + students1[ind].se >= queries[it].se){
					in[ind] = 1;
					//assert(ind);
					upd(uomp[students1[ind].se], 1);
				}
				vc1.pop_back();
				//cout << vc1.size() << "\n";
			}
			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:71:19: 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]
   71 |  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 0 ms 332 KB Output is correct
7 Correct 34 ms 1100 KB Output is correct
8 Correct 38 ms 1064 KB Output is correct
9 Correct 36 ms 1124 KB Output is correct
10 Correct 24 ms 844 KB Output is correct
11 Correct 36 ms 1080 KB Output is correct
12 Correct 24 ms 868 KB Output is correct
13 Correct 6 ms 1100 KB Output is correct
14 Correct 6 ms 1180 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 5 ms 1100 KB Output is correct
17 Correct 22 ms 844 KB Output is correct
18 Correct 3 ms 844 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 406 ms 23056 KB Output is correct
2 Correct 467 ms 23096 KB Output is correct
3 Correct 428 ms 23028 KB Output is correct
4 Correct 218 ms 18996 KB Output is correct
5 Correct 400 ms 23216 KB Output is correct
6 Correct 326 ms 19144 KB Output is correct
7 Correct 402 ms 23160 KB Output is correct
8 Correct 518 ms 21820 KB Output is correct
9 Correct 385 ms 21820 KB Output is correct
10 Correct 389 ms 23104 KB Output is correct
11 Correct 245 ms 18808 KB Output is correct
12 Correct 226 ms 18712 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 406 ms 23056 KB Output is correct
2 Correct 467 ms 23096 KB Output is correct
3 Correct 428 ms 23028 KB Output is correct
4 Correct 218 ms 18996 KB Output is correct
5 Correct 400 ms 23216 KB Output is correct
6 Correct 326 ms 19144 KB Output is correct
7 Correct 402 ms 23160 KB Output is correct
8 Correct 518 ms 21820 KB Output is correct
9 Correct 385 ms 21820 KB Output is correct
10 Correct 389 ms 23104 KB Output is correct
11 Correct 245 ms 18808 KB Output is correct
12 Correct 226 ms 18712 KB Output is correct
13 Correct 2984 ms 23288 KB Output is correct
14 Correct 2167 ms 23468 KB Output is correct
15 Correct 432 ms 23220 KB Output is correct
16 Correct 1627 ms 19744 KB Output is correct
17 Correct 2149 ms 23804 KB Output is correct
18 Correct 392 ms 19384 KB Output is correct
19 Execution timed out 3014 ms 23424 KB Time limit exceeded
20 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 0 ms 332 KB Output is correct
7 Correct 34 ms 1100 KB Output is correct
8 Correct 38 ms 1064 KB Output is correct
9 Correct 36 ms 1124 KB Output is correct
10 Correct 24 ms 844 KB Output is correct
11 Correct 36 ms 1080 KB Output is correct
12 Correct 24 ms 868 KB Output is correct
13 Correct 6 ms 1100 KB Output is correct
14 Correct 6 ms 1180 KB Output is correct
15 Correct 6 ms 1100 KB Output is correct
16 Correct 5 ms 1100 KB Output is correct
17 Correct 22 ms 844 KB Output is correct
18 Correct 3 ms 844 KB Output is correct
19 Correct 406 ms 23056 KB Output is correct
20 Correct 467 ms 23096 KB Output is correct
21 Correct 428 ms 23028 KB Output is correct
22 Correct 218 ms 18996 KB Output is correct
23 Correct 400 ms 23216 KB Output is correct
24 Correct 326 ms 19144 KB Output is correct
25 Correct 402 ms 23160 KB Output is correct
26 Correct 518 ms 21820 KB Output is correct
27 Correct 385 ms 21820 KB Output is correct
28 Correct 389 ms 23104 KB Output is correct
29 Correct 245 ms 18808 KB Output is correct
30 Correct 226 ms 18712 KB Output is correct
31 Correct 2984 ms 23288 KB Output is correct
32 Correct 2167 ms 23468 KB Output is correct
33 Correct 432 ms 23220 KB Output is correct
34 Correct 1627 ms 19744 KB Output is correct
35 Correct 2149 ms 23804 KB Output is correct
36 Correct 392 ms 19384 KB Output is correct
37 Execution timed out 3014 ms 23424 KB Time limit exceeded
38 Halted 0 ms 0 KB -