| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 104014 |
2019-04-03T16:59:31 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) {
memset(meStep, -1, sizeof(meStep));
me.push(mp(Mx * 1000 + My, mid));
while(!me.empty()) {
int curx = me.front().F / 1000;
int cury = me.front().F % 1000;
int curstep = me.front().S;
me.pop();
if(meStep[curx][cury] != -1) continue;
meStep[curx][cury] = curstep;
for(int i = 0; i < 4; i++) {
for(int i1 = 1; i1 <= s; i1++) {
int movexx = movex[i] * i1 + curx;
int 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;
}
}
}
//cout << meStep[Dx][Dy] << " " << beeStep[Dx][Dy] << "\n";
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;
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()) {
int curx = bee.front().F / 1000;
int cury = bee.front().F % 1000;
int curstep = bee.front().S;
bee.pop();
if(beeStep[curx][cury] != -1) continue;
beeStep[curx][cury] = curstep;
for(int i = 0; i < 4; i++) {
int movexx = movex[i] + curx;
int 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) {
int 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:46:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &s);
~~~~~^~~~~~~~~~~~~~~~
mecho.cpp:48:8: 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 |
7 ms |
5504 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 |
6 ms |
5376 KB |
Output isn't correct |
| 5 |
Incorrect |
7 ms |
5376 KB |
Output isn't correct |
| 6 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 7 |
Execution timed out |
1076 ms |
19208 KB |
Time limit exceeded |
| 8 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 9 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 10 |
Incorrect |
7 ms |
5376 KB |
Output isn't correct |
| 11 |
Incorrect |
8 ms |
5504 KB |
Output isn't correct |
| 12 |
Incorrect |
6 ms |
5376 KB |
Output isn't correct |
| 13 |
Incorrect |
9 ms |
5504 KB |
Output isn't correct |
| 14 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 16 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 18 |
Correct |
9 ms |
5504 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5504 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5504 KB |
Output is correct |
| 21 |
Correct |
8 ms |
5424 KB |
Output is correct |
| 22 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 23 |
Correct |
8 ms |
5504 KB |
Output is correct |
| 24 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5376 KB |
Output is correct |
| 26 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 27 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5432 KB |
Output is correct |
| 29 |
Correct |
9 ms |
5504 KB |
Output is correct |
| 30 |
Correct |
10 ms |
5504 KB |
Output is correct |
| 31 |
Correct |
9 ms |
5504 KB |
Output is correct |
| 32 |
Correct |
11 ms |
5632 KB |
Output is correct |
| 33 |
Correct |
13 ms |
5632 KB |
Output is correct |
| 34 |
Correct |
186 ms |
6144 KB |
Output is correct |
| 35 |
Runtime error |
162 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 36 |
Correct |
17 ms |
5760 KB |
Output is correct |
| 37 |
Correct |
305 ms |
6452 KB |
Output is correct |
| 38 |
Runtime error |
165 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 39 |
Correct |
16 ms |
5760 KB |
Output is correct |
| 40 |
Correct |
419 ms |
6648 KB |
Output is correct |
| 41 |
Runtime error |
173 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 42 |
Correct |
15 ms |
5760 KB |
Output is correct |
| 43 |
Correct |
508 ms |
6996 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 |
673 ms |
7252 KB |
Output is correct |
| 47 |
Runtime error |
161 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 48 |
Correct |
21 ms |
5888 KB |
Output is correct |
| 49 |
Correct |
884 ms |
7412 KB |
Output is correct |
| 50 |
Runtime error |
157 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 51 |
Correct |
21 ms |
5888 KB |
Output is correct |
| 52 |
Execution timed out |
1081 ms |
7680 KB |
Time limit exceeded |
| 53 |
Runtime error |
170 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 54 |
Correct |
25 ms |
6016 KB |
Output is correct |
| 55 |
Execution timed out |
1060 ms |
7936 KB |
Time limit exceeded |
| 56 |
Runtime error |
180 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 57 |
Correct |
30 ms |
6016 KB |
Output is correct |
| 58 |
Execution timed out |
1083 ms |
8360 KB |
Time limit exceeded |
| 59 |
Runtime error |
183 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 60 |
Correct |
32 ms |
6016 KB |
Output is correct |
| 61 |
Execution timed out |
1074 ms |
8604 KB |
Time limit exceeded |
| 62 |
Runtime error |
166 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 63 |
Incorrect |
42 ms |
6020 KB |
Output isn't correct |
| 64 |
Incorrect |
272 ms |
6136 KB |
Output isn't correct |
| 65 |
Incorrect |
279 ms |
6012 KB |
Output isn't correct |
| 66 |
Incorrect |
44 ms |
6008 KB |
Output isn't correct |
| 67 |
Correct |
56 ms |
6136 KB |
Output is correct |
| 68 |
Incorrect |
36 ms |
6108 KB |
Output isn't correct |
| 69 |
Incorrect |
34 ms |
6136 KB |
Output isn't correct |
| 70 |
Incorrect |
32 ms |
6108 KB |
Output isn't correct |
| 71 |
Incorrect |
35 ms |
6008 KB |
Output isn't correct |
| 72 |
Incorrect |
39 ms |
6000 KB |
Output isn't correct |
| 73 |
Incorrect |
284 ms |
6612 KB |
Output isn't correct |
| 74 |
Runtime error |
259 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 75 |
Incorrect |
705 ms |
6648 KB |
Output isn't correct |
| 76 |
Incorrect |
549 ms |
6696 KB |
Output isn't correct |
| 77 |
Execution timed out |
1071 ms |
8392 KB |
Time limit exceeded |
| 78 |
Correct |
147 ms |
7036 KB |
Output is correct |
| 79 |
Runtime error |
214 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 80 |
Incorrect |
773 ms |
7144 KB |
Output isn't correct |
| 81 |
Incorrect |
606 ms |
6620 KB |
Output isn't correct |
| 82 |
Execution timed out |
1069 ms |
9976 KB |
Time limit exceeded |
| 83 |
Incorrect |
146 ms |
6904 KB |
Output isn't correct |
| 84 |
Runtime error |
203 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 85 |
Execution timed out |
1063 ms |
9368 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1059 ms |
7516 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1032 ms |
15484 KB |
Time limit exceeded |
| 88 |
Incorrect |
327 ms |
9592 KB |
Output isn't correct |
| 89 |
Runtime error |
188 ms |
66560 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 90 |
Execution timed out |
1069 ms |
17416 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1070 ms |
38720 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1070 ms |
11772 KB |
Time limit exceeded |
