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Submission #383762

# Submission time Handle Problem Language Result Execution time Memory
383762 2021-03-30T19:20:22 Z wind_reaper Examination (JOI19_examination) C++17
0 / 100
 180 ms 14044 KB 
#include <bits/stdc++.h>

using namespace std;

struct BIT{
	vector<int> tree;
	int N;
	BIT(int _n){
		N = _n;
		tree.resize(N+1);
	}
	void upd(int pos, int val){
		for(++pos; pos <= N; pos += (pos & (-pos)))
			tree[pos] += val;
	}
	int que(int idx){
		int sum = 0;
		for(idx++; idx > 0; idx -= (idx & (-idx)))
			sum += tree[idx];
		return sum;
	}
};

int32_t main(){
	ios_base::sync_with_stdio(false); 
	cin.tie(NULL); 
	
	int n, q;
	cin >> n >> q;

	vector<array<int, 4>> marks(n), query(q);
	vector<int> ds(n+q), dt(n+q);
	vector<BIT> ft(2, n+q);

	for(int i = 0; i < n; i++){
		auto& [tot, s, t, idx] = marks[i];
		cin >> s >> t;
		tot = s + t;
		idx = i;
		ds[i] = s;
		dt[i] = t;
	}
	for(int i = 0; i < q; i++){
		auto& [tot, s, t, idx] = query[i];
		cin >> s >> t >> tot;
		tot = max(tot, s + t);
		idx = i;
		ds[i+n] = s;
		dt[i+n] = t;
	}

	sort(ds.begin(), ds.end());
	ds.erase(unique(ds.begin(), ds.end()), ds.end());
	sort(dt.begin(), dt.end());
	dt.erase(unique(dt.begin(), dt.end()), dt.end());

	for(auto& [tot, s, t, idx] : marks){
		s = lower_bound(ds.begin(), ds.end(), s) - ds.begin();
		t = lower_bound(dt.begin(), dt.end(), t) - dt.begin();
	}

	for(auto& [tot, s, t, idx] : query){
		s = lower_bound(ds.begin(), ds.end(), s) - ds.begin();
		t = lower_bound(dt.begin(), dt.end(), t) - dt.begin();
	}

	sort(marks.rbegin(), marks.rend());
	sort(query.rbegin(), query.rend());

	vector<int> ans(q);

	int idx = 0;
	for(int i = 0; i < q; i++){
		while(marks[idx][0] >= query[i][0]){
			ft[0].upd(marks[idx][1], 1);
			ft[1].upd(marks[idx][2], 1);
			idx++;
		}
		ans[query[i][3]] = idx - ft[0].que(query[i][1]-1) - ft[1].que(query[i][2]-1);
	}

	for(int i = 0; i < q; i++)
		cout << ans[i] << '\n';
	return 0; 
}

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 6 ms 620 KB Output is correct
8 Correct 6 ms 620 KB Output is correct
9 Correct 6 ms 620 KB Output is correct
10 Correct 5 ms 620 KB Output is correct
11 Correct 5 ms 620 KB Output is correct
12 Runtime error 5 ms 876 KB Execution killed with signal 11
13 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 7644 KB Output is correct
2 Correct 179 ms 7644 KB Output is correct
3 Correct 180 ms 7644 KB Output is correct
4 Correct 138 ms 7644 KB Output is correct
5 Correct 139 ms 7644 KB Output is correct
6 Runtime error 113 ms 14044 KB Execution killed with signal 11
7 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 7644 KB Output is correct
2 Correct 179 ms 7644 KB Output is correct
3 Correct 180 ms 7644 KB Output is correct
4 Correct 138 ms 7644 KB Output is correct
5 Correct 139 ms 7644 KB Output is correct
6 Runtime error 113 ms 14044 KB Execution killed with signal 11
7 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 6 ms 620 KB Output is correct
8 Correct 6 ms 620 KB Output is correct
9 Correct 6 ms 620 KB Output is correct
10 Correct 5 ms 620 KB Output is correct
11 Correct 5 ms 620 KB Output is correct
12 Runtime error 5 ms 876 KB Execution killed with signal 11
13 Halted 0 ms 0 KB -