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답안 #845973

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
845973 2023-09-07T01:46:12 Z NK_ Examination (JOI19_examination) C++17
100 / 100
 303 ms 20720 KB 
// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
 
using namespace std;
 
#define nl '\n'
#define pb push_back
#define pf push_front
 
#define mp make_pair
#define f first
#define s second
#define sz(x) int(x.size())
 
template<class T> using V = vector<T>;
using pi = pair<int, int>;
using vi = V<int>;
using vpi = V<pi>;
 
using ll = long long;
using pl = pair<ll, ll>;
using vpl = V<pl>;
using vl = V<ll>;
 
using db = long double;
 
template<class T> using pq = priority_queue<T, V<T>, less<T>>;
 
const int MOD = 1e9 + 7;
const ll INFL = ll(1e17);
const int LG = 19;

struct BIT {
	int N; V<ll> data;
	void init(int _N) { N = _N; data = V<ll>(N, 0); }
	void add(int p, ll x) { for (++p;p<=N;p+=p&-p) data[p-1] += x; }
	ll sum(int l, int r) { return sum(r+1)-sum(l); }
	ll sum(int r) { ll s = 0; for(;r;r-=r&-r)s+=data[r-1]; return s; }
};

int main() {
	cin.tie(0)->sync_with_stdio(0);

	int N, Q; cin >> N >> Q;

	vl A(N), B(N); for(int i = 0; i < N; i++) {
		cin >> A[i] >> B[i];
	}

	vi I(N); iota(begin(I), end(I), 0);

	sort(begin(I), end(I), [&](int a, int b) {
		return A[a] > A[b];
	}); 

	V<V<array<ll, 3>>> QQ(N); vi ans(Q);

	auto find = [&](ll x) {
		int lo = -1, hi = N - 1;
		while(lo < hi) {
			int mid = (lo + hi + 1) / 2;
			if (x <= A[I[mid]]) lo = mid;
			else hi = mid - 1;
		}
		return lo;
	};

	for(int i = 0; i < Q; i++) {
		ll a, b, c; cin >> a >> b >> c; 
		// cout << a << " " << b << " " << c << endl;

		// c-query
		int cq = find(a);
		if (cq != -1) {
			QQ[cq].pb({c, 1, i});
			// cout << i << " " << cq << endl;
		}

		// everything after is a b-query
		int bq = min(find(c - b), cq);
		if (bq != -1) {
			QQ[bq].pb({c, -1, i});
			QQ[bq].pb({b, 0, i});
			// cout << i << " " << bq << endl;
		}
	}

	// cout << endl;

	vl COOR = {INFL};
	for(int i = 0; i < N; i++) { 
		COOR.pb(A[i] + B[i]);
		COOR.pb(B[i]);
	}

	sort(begin(COOR), end(COOR));
	COOR.erase(unique(begin(COOR), end(COOR)), end(COOR));

	int M = sz(COOR);
	BIT ct, bt; ct.init(M + 1), bt.init(M + 1);
	for(int i = 0; i < N; i++) {
		int ab = lower_bound(begin(COOR), end(COOR), A[I[i]] + B[I[i]]) - begin(COOR);
		int b = lower_bound(begin(COOR), end(COOR), B[I[i]]) - begin(COOR);

		ct.add(ab, 1);
		bt.add(b, 1);

		for(auto q : QQ[i]) {
			if (q[1] == 0) {
				int x = lower_bound(begin(COOR), end(COOR), q[0]) - begin(COOR);
				ans[q[2]] += bt.sum(x, M - 1);
			} else {
				int x = lower_bound(begin(COOR), end(COOR), q[0]) - begin(COOR);
				ans[q[2]] += q[1] * ct.sum(x, M - 1);
			}
		}
	}

	for(int i = 0; i < Q; i++) cout << ans[i] << endl;

	exit(0-0);
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 9 ms 860 KB Output is correct
8 Correct 7 ms 856 KB Output is correct
9 Correct 7 ms 860 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 6 ms 860 KB Output is correct
12 Correct 6 ms 860 KB Output is correct
13 Correct 7 ms 1100 KB Output is correct
14 Correct 7 ms 860 KB Output is correct
15 Correct 7 ms 1020 KB Output is correct
16 Correct 8 ms 860 KB Output is correct
17 Correct 7 ms 860 KB Output is correct
18 Correct 4 ms 604 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 269 ms 19992 KB Output is correct
2 Correct 251 ms 19904 KB Output is correct
3 Correct 252 ms 20128 KB Output is correct
4 Correct 229 ms 19180 KB Output is correct
5 Correct 203 ms 15640 KB Output is correct
6 Correct 161 ms 14884 KB Output is correct
7 Correct 229 ms 20092 KB Output is correct
8 Correct 252 ms 19892 KB Output is correct
9 Correct 227 ms 20260 KB Output is correct
10 Correct 192 ms 12468 KB Output is correct
11 Correct 210 ms 19464 KB Output is correct
12 Correct 148 ms 11708 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 269 ms 19992 KB Output is correct
2 Correct 251 ms 19904 KB Output is correct
3 Correct 252 ms 20128 KB Output is correct
4 Correct 229 ms 19180 KB Output is correct
5 Correct 203 ms 15640 KB Output is correct
6 Correct 161 ms 14884 KB Output is correct
7 Correct 229 ms 20092 KB Output is correct
8 Correct 252 ms 19892 KB Output is correct
9 Correct 227 ms 20260 KB Output is correct
10 Correct 192 ms 12468 KB Output is correct
11 Correct 210 ms 19464 KB Output is correct
12 Correct 148 ms 11708 KB Output is correct
13 Correct 282 ms 17284 KB Output is correct
14 Correct 292 ms 19528 KB Output is correct
15 Correct 260 ms 19892 KB Output is correct
16 Correct 261 ms 18432 KB Output is correct
17 Correct 214 ms 13140 KB Output is correct
18 Correct 163 ms 14816 KB Output is correct
19 Correct 298 ms 17520 KB Output is correct
20 Correct 291 ms 18768 KB Output is correct
21 Correct 272 ms 16744 KB Output is correct
22 Correct 201 ms 14104 KB Output is correct
23 Correct 205 ms 18796 KB Output is correct
24 Correct 141 ms 10944 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 9 ms 860 KB Output is correct
8 Correct 7 ms 856 KB Output is correct
9 Correct 7 ms 860 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 6 ms 860 KB Output is correct
12 Correct 6 ms 860 KB Output is correct
13 Correct 7 ms 1100 KB Output is correct
14 Correct 7 ms 860 KB Output is correct
15 Correct 7 ms 1020 KB Output is correct
16 Correct 8 ms 860 KB Output is correct
17 Correct 7 ms 860 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 269 ms 19992 KB Output is correct
20 Correct 251 ms 19904 KB Output is correct
21 Correct 252 ms 20128 KB Output is correct
22 Correct 229 ms 19180 KB Output is correct
23 Correct 203 ms 15640 KB Output is correct
24 Correct 161 ms 14884 KB Output is correct
25 Correct 229 ms 20092 KB Output is correct
26 Correct 252 ms 19892 KB Output is correct
27 Correct 227 ms 20260 KB Output is correct
28 Correct 192 ms 12468 KB Output is correct
29 Correct 210 ms 19464 KB Output is correct
30 Correct 148 ms 11708 KB Output is correct
31 Correct 282 ms 17284 KB Output is correct
32 Correct 292 ms 19528 KB Output is correct
33 Correct 260 ms 19892 KB Output is correct
34 Correct 261 ms 18432 KB Output is correct
35 Correct 214 ms 13140 KB Output is correct
36 Correct 163 ms 14816 KB Output is correct
37 Correct 298 ms 17520 KB Output is correct
38 Correct 291 ms 18768 KB Output is correct
39 Correct 272 ms 16744 KB Output is correct
40 Correct 201 ms 14104 KB Output is correct
41 Correct 205 ms 18796 KB Output is correct
42 Correct 141 ms 10944 KB Output is correct
43 Correct 297 ms 18940 KB Output is correct
44 Correct 297 ms 18884 KB Output is correct
45 Correct 303 ms 20720 KB Output is correct
46 Correct 261 ms 18948 KB Output is correct
47 Correct 232 ms 15500 KB Output is correct
48 Correct 156 ms 11572 KB Output is correct
49 Correct 291 ms 20256 KB Output is correct
50 Correct 293 ms 17336 KB Output is correct
51 Correct 300 ms 20168 KB Output is correct
52 Correct 197 ms 11452 KB Output is correct
53 Correct 213 ms 19480 KB Output is correct