| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 104016 |
2019-04-03T17:04:33 Z |
Erkhemkhuu |
Mecho (IOI09_mecho) |
C++17 |
|
1000 ms |
66560 KB |
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define F first
#define S second
int movex[4] = {-1, 0, 1, 0};
int movey[4] = {0, 1, 0, -1};
char maps[805][805];
int beeStep[805][805], meStep[805][805], n, Mx, My, s, Dx, Dy;
queue <pair <int, int> > bee, me;
bool check(int x, int y) {
if(x >= 0 && x < n && y >= 0 && y < n) return true;
return false;
}
bool can(int mid) {
int curx, cury, curstep, i, i1, movexx, moveyy;
memset(meStep, -1, sizeof(meStep));
me.push(mp(Mx * 1000 + My, mid));
while(!me.empty()) {
curx = me.front().F / 1000;
cury = me.front().F % 1000;
curstep = me.front().S;
me.pop();
if(meStep[curx][cury] == -1) {
meStep[curx][cury] = curstep;
for(i = 0; i < 4; i++) {
for(i1 = 1; i1 <= s; i1++) {
movexx = movex[i] * i1 + curx;
moveyy = movey[i] * i1 + cury;
if(check(movexx, moveyy) && maps[movexx][moveyy] != 'T' && meStep[movexx][moveyy] == -1) {
if(beeStep[movexx][moveyy] != -1 && beeStep[movexx][moveyy] <= curstep) break;
me.push(mp(movexx * 1000 + moveyy, curstep + 1));
}
else break;
}
}
}
}
if(beeStep[Dx][Dy] == -1) beeStep[Dx][Dy] = 1e9;
if(meStep[Dx][Dy] == -1) return false;
return meStep[Dx][Dy] < beeStep[Dx][Dy];
}
int main() {
int i, j, l, r, curx, cury, curstep, movexx, moveyy, mid;
scanf("%d%d", &n, &s);
for(i = 0; i < n; i++) {
scanf("%s", maps[i]);
for(j = 0; j < n; j++) {
if(maps[i][j] == 'H')
bee.push(mp(i * 1000 + j, 0));
if(maps[i][j] == 'M') {
Mx = i; My = j;
}
if(maps[i][j] == 'D') {
Dx = i; Dy = j;
}
}
}
memset(beeStep, -1, sizeof(beeStep));
while(!bee.empty()) {
curx = bee.front().F / 1000;
cury = bee.front().F % 1000;
curstep = bee.front().S;
bee.pop();
if(beeStep[curx][cury] != -1) continue;
beeStep[curx][cury] = curstep;
for(i = 0; i < 4; i++) {
movexx = movex[i] + curx;
moveyy = movey[i] + cury;
if(check(movexx, moveyy) && maps[movexx][moveyy] != 'T' && beeStep[movexx][moveyy] == -1)
bee.push(mp(movexx * 1000 + moveyy, curstep + 1));
}
}
if(!can(0)) {
printf("-1\n");
return 0;
}
l = 0; r = n * n;
while(l + 1 < r) {
mid = (l + r) / 2;
if(can(mid)) l = mid;
else r = mid;
}
printf("%d\n", l);
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:47:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &s);
~~~~~^~~~~~~~~~~~~~~~
mecho.cpp:49:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", maps[i]);
~~~~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 2 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 3 |
Correct |
7 ms |
5376 KB |
Output is correct |
| 4 |
Incorrect |
8 ms |
5376 KB |
Output isn't correct |
| 5 |
Correct |
7 ms |
5376 KB |
Output is correct |
| 6 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 7 |
Execution timed out |
1071 ms |
19076 KB |
Time limit exceeded |
| 8 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5376 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 11 |
Correct |
7 ms |
5376 KB |
Output is correct |
| 12 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 13 |
Incorrect |
9 ms |
5376 KB |
Output isn't correct |
| 14 |
Correct |
19 ms |
5416 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5376 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5476 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 19 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5504 KB |
Output is correct |
| 22 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 23 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 24 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 26 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 27 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 29 |
Correct |
22 ms |
5632 KB |
Output is correct |
| 30 |
Correct |
11 ms |
5504 KB |
Output is correct |
| 31 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 32 |
Correct |
13 ms |
5504 KB |
Output is correct |
| 33 |
Correct |
17 ms |
5760 KB |
Output is correct |
| 34 |
Correct |
224 ms |
6144 KB |
Output is correct |
| 35 |
Runtime error |
175 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 36 |
Correct |
14 ms |
5760 KB |
Output is correct |
| 37 |
Correct |
310 ms |
6528 KB |
Output is correct |
| 38 |
Runtime error |
159 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 39 |
Correct |
14 ms |
5840 KB |
Output is correct |
| 40 |
Correct |
397 ms |
6748 KB |
Output is correct |
| 41 |
Runtime error |
181 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 42 |
Correct |
23 ms |
5760 KB |
Output is correct |
| 43 |
Correct |
544 ms |
7092 KB |
Output is correct |
| 44 |
Runtime error |
170 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 45 |
Correct |
18 ms |
5888 KB |
Output is correct |
| 46 |
Correct |
686 ms |
7168 KB |
Output is correct |
| 47 |
Runtime error |
163 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 48 |
Correct |
24 ms |
5888 KB |
Output is correct |
| 49 |
Correct |
885 ms |
7492 KB |
Output is correct |
| 50 |
Runtime error |
184 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 51 |
Correct |
25 ms |
5888 KB |
Output is correct |
| 52 |
Execution timed out |
1068 ms |
7728 KB |
Time limit exceeded |
| 53 |
Runtime error |
174 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 54 |
Correct |
28 ms |
5888 KB |
Output is correct |
| 55 |
Execution timed out |
1074 ms |
7936 KB |
Time limit exceeded |
| 56 |
Runtime error |
201 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 57 |
Correct |
38 ms |
6016 KB |
Output is correct |
| 58 |
Execution timed out |
1058 ms |
8312 KB |
Time limit exceeded |
| 59 |
Runtime error |
173 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 60 |
Correct |
28 ms |
6016 KB |
Output is correct |
| 61 |
Execution timed out |
1082 ms |
8696 KB |
Time limit exceeded |
| 62 |
Runtime error |
180 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 63 |
Incorrect |
44 ms |
6008 KB |
Output isn't correct |
| 64 |
Incorrect |
282 ms |
6008 KB |
Output isn't correct |
| 65 |
Incorrect |
239 ms |
6008 KB |
Output isn't correct |
| 66 |
Incorrect |
51 ms |
6008 KB |
Output isn't correct |
| 67 |
Correct |
46 ms |
6016 KB |
Output is correct |
| 68 |
Incorrect |
36 ms |
6144 KB |
Output isn't correct |
| 69 |
Incorrect |
41 ms |
5984 KB |
Output isn't correct |
| 70 |
Incorrect |
35 ms |
6136 KB |
Output isn't correct |
| 71 |
Incorrect |
33 ms |
6008 KB |
Output isn't correct |
| 72 |
Incorrect |
40 ms |
6136 KB |
Output isn't correct |
| 73 |
Incorrect |
186 ms |
6600 KB |
Output isn't correct |
| 74 |
Runtime error |
197 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 75 |
Incorrect |
608 ms |
6724 KB |
Output isn't correct |
| 76 |
Incorrect |
453 ms |
6724 KB |
Output isn't correct |
| 77 |
Execution timed out |
1074 ms |
8260 KB |
Time limit exceeded |
| 78 |
Correct |
175 ms |
7032 KB |
Output is correct |
| 79 |
Runtime error |
231 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 80 |
Incorrect |
842 ms |
7036 KB |
Output isn't correct |
| 81 |
Incorrect |
665 ms |
6520 KB |
Output isn't correct |
| 82 |
Execution timed out |
1061 ms |
9976 KB |
Time limit exceeded |
| 83 |
Incorrect |
183 ms |
7032 KB |
Output isn't correct |
| 84 |
Runtime error |
213 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 85 |
Execution timed out |
1051 ms |
9332 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1068 ms |
7544 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1077 ms |
15484 KB |
Time limit exceeded |
| 88 |
Incorrect |
331 ms |
9720 KB |
Output isn't correct |
| 89 |
Runtime error |
208 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 90 |
Execution timed out |
1079 ms |
17544 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1062 ms |
37848 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1069 ms |
11752 KB |
Time limit exceeded |
