| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 53463 |
2018-06-30T05:27:33 Z |
강태규(#1417) |
Mecho (IOI09_mecho) |
C++11 |
|
250 ms |
8828 KB |
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <unordered_map>
#include <functional>
#include <cstring>
#include <cmath>
#include <ctime>
#include <cstdlib>
using namespace std;
typedef long long llong;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<llong, llong> pll;
const int inf = 1e8;
int n, sd, sx, sy;
char grid[800][801];
int dist[800][800];
int bdst[800][800];
int que[800 * 800];
const int gox[4] = { 1, 0, -1, 0 };
const int goy[4] = { 0, 1, 0, -1 };
int check(int t) {
for (int i = 0; i < n; ++i) {
for (int j = 0; j < n; ++j) {
bdst[i][j] = inf;
}
}
int tp = 0, bt = 0;
bdst[sx][sy] = sd * t;
que[tp++] = sx * n + sy;
while (bt < tp) {
int xy = que[bt++];
int x = xy / n;
int y = xy % n;
if (grid[x][y] == 'D') return 1;
if (dist[x][y] * sd <= bdst[x][y]) continue;
for (int i = 0; i < 4; ++i) {
int nx = x + gox[i];
int ny = y + goy[i];
if (nx < 0 || n <= nx || ny < 0 || n <= ny) continue;
if (grid[nx][ny] == 'T') continue;
if (bdst[nx][ny] < inf) continue;
bdst[nx][ny] = bdst[x][y] + 1;
que[tp++] = nx * n + ny;
}
}
return 0;
}
int main() {
scanf("%d%d", &n, &sd);
int tp = 0, bt = 0;
for (int i = 0; i < n; ++i) {
scanf("%s", grid[i]);
for (int j = 0; j < n; ++j) {
dist[i][j] = inf;
if (grid[i][j] == 'M') sx = i, sy = j;
else if (grid[i][j] == 'H') dist[i][j] = 0, que[tp++] = i * n + j;
}
}
while (bt < tp) {
int xy = que[bt++];
int x = xy / n;
int y = xy % n;
if (grid[x][y] == 'D') continue;
for (int i = 0; i < 4; ++i) {
int nx = x + gox[i];
int ny = y + goy[i];
if (nx < 0 || n <= nx || ny < 0 || n <= ny) continue;
if (grid[nx][ny] == 'T') continue;
if (dist[nx][ny] < inf) continue;
dist[nx][ny] = dist[x][y] + 1;
que[tp++] = nx * n + ny;
}
}
int s = -1, e = dist[sx][sy];
while (s < e) {
int m = (s + e + 1) / 2;
if (check(m)) s = m;
else e = m - 1;
}
printf("%d\n", s);
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &sd);
~~~~~^~~~~~~~~~~~~~~~~
mecho.cpp:62:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", grid[i]);
~~~~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
488 KB |
Output is correct |
| 3 |
Correct |
2 ms |
488 KB |
Output is correct |
| 4 |
Correct |
2 ms |
604 KB |
Output is correct |
| 5 |
Correct |
2 ms |
620 KB |
Output is correct |
| 6 |
Correct |
2 ms |
620 KB |
Output is correct |
| 7 |
Correct |
109 ms |
8716 KB |
Output is correct |
| 8 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 9 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 10 |
Correct |
3 ms |
8716 KB |
Output is correct |
| 11 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 12 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 13 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 14 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 15 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 16 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 17 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 18 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 19 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 20 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 21 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 22 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 23 |
Correct |
3 ms |
8716 KB |
Output is correct |
| 24 |
Correct |
3 ms |
8716 KB |
Output is correct |
| 25 |
Correct |
3 ms |
8716 KB |
Output is correct |
| 26 |
Correct |
4 ms |
8716 KB |
Output is correct |
| 27 |
Correct |
3 ms |
8716 KB |
Output is correct |
| 28 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 29 |
Correct |
5 ms |
8716 KB |
Output is correct |
| 30 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 31 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 32 |
Correct |
2 ms |
8716 KB |
Output is correct |
| 33 |
Correct |
7 ms |
8716 KB |
Output is correct |
| 34 |
Correct |
7 ms |
8716 KB |
Output is correct |
| 35 |
Correct |
24 ms |
8716 KB |
Output is correct |
| 36 |
Correct |
9 ms |
8716 KB |
Output is correct |
| 37 |
Correct |
8 ms |
8716 KB |
Output is correct |
| 38 |
Correct |
33 ms |
8716 KB |
Output is correct |
| 39 |
Correct |
10 ms |
8716 KB |
Output is correct |
| 40 |
Correct |
10 ms |
8716 KB |
Output is correct |
| 41 |
Correct |
50 ms |
8716 KB |
Output is correct |
| 42 |
Correct |
11 ms |
8716 KB |
Output is correct |
| 43 |
Correct |
11 ms |
8716 KB |
Output is correct |
| 44 |
Correct |
61 ms |
8716 KB |
Output is correct |
| 45 |
Correct |
14 ms |
8716 KB |
Output is correct |
| 46 |
Correct |
13 ms |
8716 KB |
Output is correct |
| 47 |
Correct |
64 ms |
8716 KB |
Output is correct |
| 48 |
Correct |
15 ms |
8716 KB |
Output is correct |
| 49 |
Correct |
15 ms |
8716 KB |
Output is correct |
| 50 |
Correct |
81 ms |
8716 KB |
Output is correct |
| 51 |
Correct |
17 ms |
8716 KB |
Output is correct |
| 52 |
Correct |
17 ms |
8716 KB |
Output is correct |
| 53 |
Correct |
94 ms |
8716 KB |
Output is correct |
| 54 |
Correct |
19 ms |
8716 KB |
Output is correct |
| 55 |
Correct |
27 ms |
8716 KB |
Output is correct |
| 56 |
Correct |
123 ms |
8716 KB |
Output is correct |
| 57 |
Correct |
22 ms |
8716 KB |
Output is correct |
| 58 |
Correct |
22 ms |
8716 KB |
Output is correct |
| 59 |
Correct |
129 ms |
8716 KB |
Output is correct |
| 60 |
Correct |
23 ms |
8716 KB |
Output is correct |
| 61 |
Correct |
23 ms |
8716 KB |
Output is correct |
| 62 |
Correct |
155 ms |
8716 KB |
Output is correct |
| 63 |
Correct |
140 ms |
8716 KB |
Output is correct |
| 64 |
Correct |
250 ms |
8716 KB |
Output is correct |
| 65 |
Correct |
233 ms |
8716 KB |
Output is correct |
| 66 |
Correct |
190 ms |
8716 KB |
Output is correct |
| 67 |
Correct |
154 ms |
8716 KB |
Output is correct |
| 68 |
Correct |
69 ms |
8716 KB |
Output is correct |
| 69 |
Correct |
55 ms |
8716 KB |
Output is correct |
| 70 |
Correct |
51 ms |
8716 KB |
Output is correct |
| 71 |
Correct |
42 ms |
8716 KB |
Output is correct |
| 72 |
Correct |
41 ms |
8716 KB |
Output is correct |
| 73 |
Correct |
39 ms |
8716 KB |
Output is correct |
| 74 |
Correct |
82 ms |
8716 KB |
Output is correct |
| 75 |
Correct |
83 ms |
8828 KB |
Output is correct |
| 76 |
Correct |
83 ms |
8828 KB |
Output is correct |
| 77 |
Correct |
83 ms |
8828 KB |
Output is correct |
| 78 |
Correct |
97 ms |
8828 KB |
Output is correct |
| 79 |
Correct |
76 ms |
8828 KB |
Output is correct |
| 80 |
Correct |
82 ms |
8828 KB |
Output is correct |
| 81 |
Correct |
85 ms |
8828 KB |
Output is correct |
| 82 |
Correct |
84 ms |
8828 KB |
Output is correct |
| 83 |
Correct |
118 ms |
8828 KB |
Output is correct |
| 84 |
Correct |
96 ms |
8828 KB |
Output is correct |
| 85 |
Correct |
90 ms |
8828 KB |
Output is correct |
| 86 |
Correct |
108 ms |
8828 KB |
Output is correct |
| 87 |
Correct |
98 ms |
8828 KB |
Output is correct |
| 88 |
Correct |
113 ms |
8828 KB |
Output is correct |
| 89 |
Correct |
108 ms |
8828 KB |
Output is correct |
| 90 |
Correct |
148 ms |
8828 KB |
Output is correct |
| 91 |
Correct |
133 ms |
8828 KB |
Output is correct |
| 92 |
Correct |
141 ms |
8828 KB |
Output is correct |
