답안 #74664 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
74664	2018-09-06T00:20:13 Z	arman_ferdous	Mecho (IOI09_mecho)	C++17	6 / 100	682 ms	66560 KB

mecho

#include <bits/stdc++.h>
using namespace std;

#define xx first
#define yy second
typedef pair<int,int> ii;
const int N = 888;
const int inf = 2e9;

int n, step, d[N][N], dist[N][N];
char s[N][N];
int dx[] = {1,0,-1,0};
int dy[] = {0,1,0,-1};

queue<ii> q;
ii mecho, home;

bool can(int t) {
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			dist[i][j] = inf;

	q.push(mecho);
	dist[mecho.xx][mecho.yy] = 0;
	while(!q.empty()) {
		ii u = q.front(); q.pop();
		for(int i = 0; i < 4; i++) {
			ii v = {u.xx + dx[i], u.yy + dy[i]};

			if(min(v.xx,v.yy) < 0 || n <= max(v.xx,v.yy)) continue;
			char cell = s[v.xx][v.yy];
			if(cell == 'T' || cell == 'M' || cell == 'H') continue;
			int arrival = ceil((double)(dist[u.xx][u.yy] + 1.) / step) + t;
			if(arrival > d[v.xx][v.yy] || dist[u.xx][u.yy] + 1 > dist[v.xx][v.yy]) continue;
			dist[v.xx][v.yy] = dist[u.xx][u.yy] + 1;
			q.push(v);
		}
	}
	return dist[home.xx][home.yy] != inf;
}

int main() {
	scanf("%d %d", &n, &step);
	for(int i = 0; i < n; i++)
		scanf(" %s", s[i]);

	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++) {
			d[i][j] = inf;
			if(s[i][j] == 'M') mecho = {i,j};
			else if(s[i][j] == 'D') home = {i,j};
		}

	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++) 
			if(s[i][j] == 'H') {
				q.push({i,j});
				d[i][j] = 0;
			}

	while(!q.empty()) {
		ii u = q.front(); q.pop();
		for(int i = 0; i < 4; i++) {
			ii v = {u.xx + dx[i], u.yy + dy[i]};

			if(min(v.xx,v.yy) < 0 || n <= max(v.xx,v.yy)) continue;
			char cell = s[v.xx][v.yy];
			if(cell == 'T' || cell == 'D' || cell == 'H') continue;
			if(d[v.xx][v.yy] < d[u.xx][u.yy] + 1) continue;
			d[v.xx][v.yy] = d[u.xx][u.yy] + 1;
			q.push(v);
		}
	}
	int lo = 0, hi = n+n, ans = -1;
		while(lo <= hi) {
		int mid = (lo + hi) >> 1;
		if(can(mid)) ans = mid, lo = mid+1;
		else hi = mid-1;
	} printf("%d\n", ans);
	return 0;
}

Compilation message

mecho.cpp: In function 'int main()':
mecho.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &step);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
mecho.cpp:45:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %s", s[i]);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
6.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	2 ms	380 KB	Output isn't correct
2	Incorrect	2 ms	448 KB	Output isn't correct
3	Incorrect	2 ms	448 KB	Output isn't correct
4	Incorrect	2 ms	448 KB	Output isn't correct
5	Correct	2 ms	572 KB	Output is correct
6	Correct	2 ms	648 KB	Output is correct
7	Runtime error	322 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
8	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
9	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
10	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
11	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
12	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
13	Runtime error	682 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
14	Runtime error	605 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
15	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
16	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
17	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
18	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
19	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
20	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
21	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
22	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
23	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
24	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
25	Runtime error	5 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
26	Runtime error	2 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
27	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
28	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
29	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
30	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
31	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
32	Runtime error	3 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
33	Runtime error	17 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
34	Runtime error	24 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
35	Runtime error	294 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
36	Runtime error	21 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
37	Runtime error	29 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
38	Runtime error	291 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
39	Runtime error	25 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
40	Runtime error	39 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
41	Runtime error	279 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
42	Runtime error	32 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
43	Runtime error	46 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
44	Runtime error	292 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
45	Runtime error	41 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
46	Runtime error	60 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
47	Runtime error	287 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
48	Runtime error	48 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
49	Runtime error	69 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
50	Runtime error	299 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
51	Runtime error	54 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
52	Runtime error	85 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
53	Runtime error	284 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
54	Runtime error	65 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
55	Runtime error	100 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
56	Runtime error	292 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
57	Runtime error	72 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
58	Runtime error	115 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
59	Runtime error	318 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
60	Runtime error	84 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
61	Runtime error	146 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
62	Runtime error	290 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
63	Runtime error	136 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
64	Runtime error	197 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
65	Runtime error	188 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
66	Runtime error	169 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
67	Runtime error	150 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
68	Runtime error	61 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
69	Runtime error	55 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
70	Runtime error	55 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
71	Runtime error	51 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
72	Runtime error	35 ms	66560 KB	Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
73	Runtime error	556 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
74	Runtime error	539 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
75	Runtime error	548 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
76	Runtime error	531 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
77	Runtime error	585 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
78	Runtime error	453 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
79	Runtime error	474 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
80	Runtime error	447 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
81	Runtime error	508 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
82	Runtime error	460 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
83	Runtime error	385 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
84	Runtime error	411 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
85	Runtime error	397 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
86	Runtime error	379 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
87	Runtime error	384 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
88	Runtime error	351 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
89	Runtime error	353 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
90	Runtime error	345 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
91	Runtime error	353 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
92	Runtime error	346 ms	66560 KB	Execution killed with signal 9 (could be triggered by violating memory limits)

답안 #74664

Compilation message

Subtask #1 6.0 / 100.0

Subtask #1
6.0 / 100.0