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답안 #544522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
544522 2022-04-02T07:51:23 Z blue Sightseeing in Kyoto (JOI22_kyoto) C++17
100 / 100
 675 ms 26956 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
using namespace std;

using ll = long long;

struct road
{
	ll n;
	
	ll i1;
	ll i2;

	int t; //0 = horizontal = A, 1 = vertical = B
};

bool operator < (road A, road B)
{
	if(A.n*(B.i2 - B.i1) != B.n*(A.i2 - A.i1)) 
		return A.n*(B.i2 - B.i1) < B.n*(A.i2 - A.i1);
	else if(A.t != B.t) 
		return A.t < B.t;
	else 
		return A.i1 < B.i1;
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int H, W;
	cin >> H >> W;

	ll A[1+H], B[1+W];
	for(ll i = 1; i <= H; i++) cin >> A[i];
	for(ll j = 1; j <= W; j++) cin >> B[j];

	set<road> R;
	for(ll i = 1; i < H; i++)
		R.insert({A[i] - A[i+1], i, i+1, 0});

	for(ll j = 1; j < W; j++)
		R.insert({B[j] - B[j+1], j, j+1, 1});

	set<ll> I, J; //alive indices, where there is a valid road.
	for(ll i = 1; i <= H; i++) I.insert(i);
	for(ll j = 1; j <= W; j++) J.insert(j);

	ll ci = 1, cj = 1;

	ll cost = 0;

	// for(road r : R) cerr << r.t << ' ' << r.n << '/' << r.i2-r.i1 << '\n';

	// cerr << "road = \n";
	// 	for(auto r : R) cerr << r.n << ' ' << r.i1 << ' ' << r.i2 << ' ' << r.t << '\n';

	while(!(ci == H && cj == W))
	{
		// cerr << "\n\n\n";
		if(*I.begin() > ci)
		{
			cost += B[*J.begin()] * (*I.begin() - ci);
			ci = *I.begin();
			// cerr << "go down\n";
			continue;
		}

		if(*J.begin() > cj)
		{
			cost += A[*I.begin()] * (*J.begin() - cj);
			cj = *J.begin();
			// cerr << "go right\n";
			continue;
		}

		road r = *R.rbegin();
		R.erase(r);
		// cerr << "erase\n";

		if(r.t == 0)
		{
			ll ri = r.i1;
			ll rnxt = r.i2;

			// cerr << "remove horizontal road " << ri << '\n';
 
			I.erase(ri);

			auto it = I.lower_bound(ri);
			if(it == I.begin()) continue;
			it--;

			ll rprv = *it;

			R.erase({A[rprv] - A[ri], rprv, ri, 0});

			R.insert({A[rprv] - A[rnxt], rprv, rnxt, 0});
			// cerr << "insert\n";
		}
		else
		{
			ll ri = r.i1;
			ll rnxt = r.i2;

			// cerr << "remove vertical road " << ri << '\n';

			J.erase(ri);

			auto it = J.lower_bound(ri);
			if(it == J.begin()) continue;
			it--;

			ll rprv = *it;

			R.erase({B[rprv] - B[ri], rprv, ri, 1});

			R.insert({B[rprv] - B[rnxt], rprv, rnxt, 1});
			// cerr << "insert\n";
		}

		// cerr << "road = \n";
		// for(auto r : R) cerr << r.n << ' ' << r.i1 << ' ' << r.i2 << ' ' << r.t << '\n';
	}

	cout << cost << '\n';
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 183 ms 11172 KB Output is correct
5 Correct 64 ms 10316 KB Output is correct
6 Correct 60 ms 4668 KB Output is correct
7 Correct 641 ms 26912 KB Output is correct
8 Correct 663 ms 26908 KB Output is correct
9 Correct 625 ms 26912 KB Output is correct
10 Correct 665 ms 26900 KB Output is correct
11 Correct 339 ms 26912 KB Output is correct
12 Correct 631 ms 26956 KB Output is correct
13 Correct 661 ms 26944 KB Output is correct
14 Correct 173 ms 26956 KB Output is correct
15 Correct 202 ms 26788 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct

Subtask #3
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 183 ms 11172 KB Output is correct
33 Correct 64 ms 10316 KB Output is correct
34 Correct 60 ms 4668 KB Output is correct
35 Correct 641 ms 26912 KB Output is correct
36 Correct 663 ms 26908 KB Output is correct
37 Correct 625 ms 26912 KB Output is correct
38 Correct 665 ms 26900 KB Output is correct
39 Correct 339 ms 26912 KB Output is correct
40 Correct 631 ms 26956 KB Output is correct
41 Correct 661 ms 26944 KB Output is correct
42 Correct 173 ms 26956 KB Output is correct
43 Correct 202 ms 26788 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 1 ms 212 KB Output is correct
55 Correct 236 ms 12008 KB Output is correct
56 Correct 2 ms 468 KB Output is correct
57 Correct 11 ms 1520 KB Output is correct
58 Correct 36 ms 3860 KB Output is correct
59 Correct 675 ms 26952 KB Output is correct
60 Correct 629 ms 26908 KB Output is correct
61 Correct 608 ms 26904 KB Output is correct
62 Correct 610 ms 26912 KB Output is correct
63 Correct 164 ms 26908 KB Output is correct
64 Correct 657 ms 26948 KB Output is correct
65 Correct 648 ms 26908 KB Output is correct
66 Correct 208 ms 26828 KB Output is correct
67 Correct 205 ms 26908 KB Output is correct