답안 #519871

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
519871	2022-01-27T13:09:30 Z	naal	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	100 / 100	380 ms	112452 KB

skyscraper

// https://oj.uz/problem/view/APIO15_skyscraper
#include <bits/stdc++.h>
using namespace std;
 
#define Fname ((string) "io")
#define ii pair <int, int>
#define iii pair <int, ii>
#define fi first
#define se second
#define endl '\n'
const int N = 3e4 + 5;
 
int n, m, goal;
bitset <N> d[N], used;
vector <int> a[N];
deque <iii> dq;
 
int find(int u) {
	dq.push_back({0, {u, 0}});
	while (dq.size()) {
		u = dq.front().se.fi;
		int step = dq.front().se.se, total = dq.front().fi;
		dq.pop_front();
		if (u == goal)
			return total;
		if (d[u][step])
			continue;
		d[u][step] = 1;
		if (!used[u]) {
			// used[u] = 1;
			for (int &step : a[u])
				if (!d[u][step])
					dq.push_front({total, {u, step}});
		}
		if (u + step <= n && !d[u + step][step]) 
			dq.push_back({total + 1, {u + step, step}});
		if (u - step > 0 && !d[u - step][step])
			dq.push_back({total + 1, {u - step, step}});
	}
	return -1;
}
 
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	#ifdef lan_ngu
		freopen((Fname + ".inp").c_str(), "r", stdin);
		freopen((Fname + ".out").c_str(), "w", stdout);
	#endif
 
	// int _nt; cin >> _nt;
	int _nt = 1;
	while (_nt--) {
		cin >> n >> m;
		int init;
		for (int i = 1; i <= m; i++) {
			int b, p; cin >> b >> p;
			b++;
			a[b].push_back(p);
			if (i == 1)
				init = b;
			else if (i == 2)
				goal = b;
		}	
		cout << find(init);
	}
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:65:20: warning: 'init' may be used uninitialized in this function [-Wmaybe-uninitialized]
   65 |   cout << find(init);
      |                    ^

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct

Subtask #2

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	1100 KB	Output is correct
10	Correct	1 ms	1228 KB	Output is correct
11	Correct	1 ms	972 KB	Output is correct
12	Correct	1 ms	1356 KB	Output is correct
13	Correct	1 ms	1356 KB	Output is correct
14	Correct	2 ms	1356 KB	Output is correct
15	Correct	2 ms	1356 KB	Output is correct

Subtask #3

14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	1052 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	1100 KB	Output is correct
10	Correct	1 ms	1228 KB	Output is correct
11	Correct	1 ms	972 KB	Output is correct
12	Correct	1 ms	1356 KB	Output is correct
13	Correct	1 ms	1356 KB	Output is correct
14	Correct	2 ms	1356 KB	Output is correct
15	Correct	2 ms	1356 KB	Output is correct
16	Correct	1 ms	972 KB	Output is correct
17	Correct	3 ms	3020 KB	Output is correct
18	Correct	1 ms	1036 KB	Output is correct
19	Correct	1 ms	1100 KB	Output is correct
20	Correct	6 ms	8396 KB	Output is correct
21	Correct	2 ms	972 KB	Output is correct
22	Correct	1 ms	972 KB	Output is correct
23	Correct	4 ms	6348 KB	Output is correct
24	Correct	5 ms	7500 KB	Output is correct
25	Correct	2 ms	2380 KB	Output is correct
26	Correct	4 ms	7244 KB	Output is correct
27	Correct	4 ms	7628 KB	Output is correct
28	Correct	7 ms	8396 KB	Output is correct
29	Correct	7 ms	8268 KB	Output is correct
30	Correct	5 ms	8268 KB	Output is correct
31	Correct	6 ms	8344 KB	Output is correct
32	Correct	5 ms	8328 KB	Output is correct
33	Correct	9 ms	8396 KB	Output is correct
34	Correct	7 ms	8396 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	1028 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	1028 KB	Output is correct
9	Correct	1 ms	1032 KB	Output is correct
10	Correct	1 ms	1228 KB	Output is correct
11	Correct	1 ms	972 KB	Output is correct
12	Correct	1 ms	1228 KB	Output is correct
13	Correct	1 ms	1356 KB	Output is correct
14	Correct	2 ms	1356 KB	Output is correct
15	Correct	2 ms	1356 KB	Output is correct
16	Correct	1 ms	972 KB	Output is correct
17	Correct	3 ms	2892 KB	Output is correct
18	Correct	1 ms	1028 KB	Output is correct
19	Correct	1 ms	1100 KB	Output is correct
20	Correct	5 ms	8396 KB	Output is correct
21	Correct	1 ms	972 KB	Output is correct
22	Correct	1 ms	972 KB	Output is correct
23	Correct	4 ms	6348 KB	Output is correct
24	Correct	5 ms	7500 KB	Output is correct
25	Correct	2 ms	2380 KB	Output is correct
26	Correct	5 ms	7244 KB	Output is correct
27	Correct	5 ms	7628 KB	Output is correct
28	Correct	7 ms	8396 KB	Output is correct
29	Correct	6 ms	8348 KB	Output is correct
30	Correct	5 ms	8268 KB	Output is correct
31	Correct	7 ms	8268 KB	Output is correct
32	Correct	5 ms	8268 KB	Output is correct
33	Correct	8 ms	8396 KB	Output is correct
34	Correct	7 ms	8436 KB	Output is correct
35	Correct	13 ms	6900 KB	Output is correct
36	Correct	2 ms	2252 KB	Output is correct
37	Correct	8 ms	6348 KB	Output is correct
38	Correct	9 ms	4300 KB	Output is correct
39	Correct	6 ms	1484 KB	Output is correct
40	Correct	7 ms	2380 KB	Output is correct
41	Correct	13 ms	8012 KB	Output is correct
42	Correct	8 ms	7628 KB	Output is correct
43	Correct	8 ms	8080 KB	Output is correct
44	Correct	8 ms	8780 KB	Output is correct
45	Correct	43 ms	9412 KB	Output is correct
46	Correct	38 ms	9244 KB	Output is correct

Subtask #5

43.0 / 43.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	972 KB	Output is correct
2	Correct	1 ms	972 KB	Output is correct
3	Correct	1 ms	972 KB	Output is correct
4	Correct	1 ms	972 KB	Output is correct
5	Correct	1 ms	972 KB	Output is correct
6	Correct	1 ms	972 KB	Output is correct
7	Correct	1 ms	972 KB	Output is correct
8	Correct	1 ms	972 KB	Output is correct
9	Correct	1 ms	1100 KB	Output is correct
10	Correct	1 ms	1228 KB	Output is correct
11	Correct	1 ms	972 KB	Output is correct
12	Correct	1 ms	1276 KB	Output is correct
13	Correct	1 ms	1364 KB	Output is correct
14	Correct	2 ms	1432 KB	Output is correct
15	Correct	1 ms	1364 KB	Output is correct
16	Correct	1 ms	1040 KB	Output is correct
17	Correct	2 ms	2896 KB	Output is correct
18	Correct	1 ms	976 KB	Output is correct
19	Correct	1 ms	976 KB	Output is correct
20	Correct	5 ms	8400 KB	Output is correct
21	Correct	1 ms	976 KB	Output is correct
22	Correct	1 ms	976 KB	Output is correct
23	Correct	4 ms	6352 KB	Output is correct
24	Correct	5 ms	7504 KB	Output is correct
25	Correct	2 ms	2320 KB	Output is correct
26	Correct	4 ms	7252 KB	Output is correct
27	Correct	5 ms	7632 KB	Output is correct
28	Correct	6 ms	8404 KB	Output is correct
29	Correct	7 ms	8268 KB	Output is correct
30	Correct	5 ms	8268 KB	Output is correct
31	Correct	5 ms	8268 KB	Output is correct
32	Correct	5 ms	8324 KB	Output is correct
33	Correct	7 ms	8396 KB	Output is correct
34	Correct	6 ms	8332 KB	Output is correct
35	Correct	11 ms	6860 KB	Output is correct
36	Correct	3 ms	2256 KB	Output is correct
37	Correct	8 ms	6392 KB	Output is correct
38	Correct	9 ms	4300 KB	Output is correct
39	Correct	7 ms	1484 KB	Output is correct
40	Correct	8 ms	2380 KB	Output is correct
41	Correct	12 ms	8052 KB	Output is correct
42	Correct	7 ms	7628 KB	Output is correct
43	Correct	10 ms	8132 KB	Output is correct
44	Correct	8 ms	8780 KB	Output is correct
45	Correct	43 ms	9412 KB	Output is correct
46	Correct	39 ms	9284 KB	Output is correct
47	Correct	18 ms	20128 KB	Output is correct
48	Correct	5 ms	1740 KB	Output is correct
49	Correct	5 ms	1612 KB	Output is correct
50	Correct	4 ms	1484 KB	Output is correct
51	Correct	57 ms	79920 KB	Output is correct
52	Correct	58 ms	87104 KB	Output is correct
53	Correct	17 ms	18640 KB	Output is correct
54	Correct	35 ms	61188 KB	Output is correct
55	Correct	45 ms	77860 KB	Output is correct
56	Correct	64 ms	112192 KB	Output is correct
57	Correct	2 ms	2580 KB	Output is correct
58	Correct	64 ms	111704 KB	Output is correct
59	Correct	62 ms	103840 KB	Output is correct
60	Correct	63 ms	103864 KB	Output is correct
61	Correct	61 ms	98784 KB	Output is correct
62	Correct	116 ms	112452 KB	Output is correct
63	Correct	152 ms	111808 KB	Output is correct
64	Correct	183 ms	111820 KB	Output is correct
65	Correct	214 ms	112000 KB	Output is correct
66	Correct	380 ms	112240 KB	Output is correct
67	Correct	222 ms	112064 KB	Output is correct