| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 519432 |
2022-01-26T10:54:58 Z |
MODDI |
Mecho (IOI09_mecho) |
C++14 |
|
1000 ms |
65540 KB |
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vl vector<ll>
#define mp make_pair
#define pb push_back
using namespace std;
int n, s,sx, sy, ex, ey;
const int Nmax = 801;
char mat[Nmax][Nmax];
int dist[Nmax][Nmax];
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
int counter = 0;
vector<pii> hives;
bool vis[800][800];
class state{
public:
int x;
int y;
int steps_made;
int cur_minute;
vector<vector<bool> > vis;
};
bool in_range(int i, int j){
if(i >= 0 && j >= 0 && i < n && j < n)
return true;
return false;
}
void calculate_dist(){
queue<vector<pii> > q;
q.push(hives);
while(!q.empty()){
vector<pii> current = q.front(); q.pop();
vector<pii> next_current;
for(int i = 0; i < current.size(); i++){
int x = current[i].first, y = current[i].second;
for(int dir = 0; dir < 4; dir++){
int nx = x + dx[dir], ny = y + dy[dir];
if(in_range(nx, ny) && mat[nx][ny] != 'T' && dist[nx][ny] == -1){
dist[nx][ny] = 1 + dist[x][y];
next_current.pb(mp(nx,ny));
}
}
}
if(next_current.size() > 0)
q.push(next_current);
}
}
bool solve(int minutes){
queue<state> q;
vector<vector<bool>> vis(n, vector<bool>(n, false));
q.push({sx,sy,0,minutes+1, vis});
bool finished = false;
while(!q.empty()){
counter++;
state current = q.front(); q.pop();
int x = current.x, y = current.y, steps_made = current.steps_made, cur_minute = current.cur_minute;
vector<vector<bool>> vis = current.vis;
//cout<<x<<" "<<y<<" "<<steps_made<<" "<<cur_minute<<endl;
if(steps_made == s){
steps_made = 0;
cur_minute++;
}
for(int dir = 0; dir < 4; dir++){
int nx = x + dx[dir], ny = y + dy[dir];
//cout<<dist[nx][ny]<<" "<<cur_minute<<endl;
if(in_range(nx,ny) && mat[nx][ny] != 'T' && !vis[nx][ny] && dist[nx][ny] >= cur_minute){
if(dist[nx][ny] == cur_minute && steps_made + 1 == s)
continue;
if(nx == ex && ny == ey){
finished = true;
break;
}
vis[nx][ny] = true;
q.push({nx, ny, steps_made + 1, cur_minute,vis});
}
}
if(finished)
break;
}
return finished;
}
int main(){
cin>>n>>s;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
cin>>mat[i][j];
if(mat[i][j] == 'M')
sx = i, sy = j;
if(mat[i][j] == 'D')
ex = i, ey = j;
if(mat[i][j] == 'H')
hives.pb(mp(i,j));
}
}
memset(dist, -1, sizeof(dist));
for(int i = 0; i < hives.size(); i++)
dist[hives[i].first][hives[i].second] = 0;
calculate_dist();
int l = 0, r = 10000, solution=-1;
while(l <= r){
int mid = (l + r) / 2;
bool sol = solve(mid);
if(sol){
solution = mid;
l = mid + 1;
}
else
r = mid - 1;
}
//cout<<counter<<endl;
cout<<solution<<endl;
}
Compilation message
mecho.cpp: In function 'void calculate_dist()':
mecho.cpp:39:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | for(int i = 0; i < current.size(); i++){
| ~~^~~~~~~~~~~~~~~~
mecho.cpp: In function 'int main()':
mecho.cpp:103:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
103 | for(int i = 0; i < hives.size(); i++)
| ~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2764 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
2764 KB |
Output isn't correct |
| 3 |
Correct |
2 ms |
2736 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
2764 KB |
Output isn't correct |
| 5 |
Correct |
2 ms |
2736 KB |
Output is correct |
| 6 |
Incorrect |
10 ms |
3248 KB |
Output isn't correct |
| 7 |
Runtime error |
272 ms |
65540 KB |
Execution killed with signal 9 |
| 8 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2744 KB |
Output is correct |
| 10 |
Correct |
5 ms |
2892 KB |
Output is correct |
| 11 |
Correct |
46 ms |
6960 KB |
Output is correct |
| 12 |
Incorrect |
12 ms |
2764 KB |
Output isn't correct |
| 13 |
Runtime error |
630 ms |
65540 KB |
Execution killed with signal 9 |
| 14 |
Runtime error |
668 ms |
65536 KB |
Execution killed with signal 9 |
| 15 |
Correct |
2 ms |
2764 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2736 KB |
Output is correct |
| 17 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 18 |
Correct |
7 ms |
2732 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2764 KB |
Output is correct |
| 20 |
Correct |
8 ms |
2764 KB |
Output is correct |
| 21 |
Correct |
5 ms |
2896 KB |
Output is correct |
| 22 |
Correct |
18 ms |
2872 KB |
Output is correct |
| 23 |
Correct |
4 ms |
2868 KB |
Output is correct |
| 24 |
Correct |
38 ms |
2892 KB |
Output is correct |
| 25 |
Correct |
11 ms |
2900 KB |
Output is correct |
| 26 |
Correct |
78 ms |
2892 KB |
Output is correct |
| 27 |
Correct |
4 ms |
2876 KB |
Output is correct |
| 28 |
Correct |
21 ms |
2872 KB |
Output is correct |
| 29 |
Correct |
3 ms |
2892 KB |
Output is correct |
| 30 |
Correct |
26 ms |
2892 KB |
Output is correct |
| 31 |
Correct |
5 ms |
2892 KB |
Output is correct |
| 32 |
Correct |
36 ms |
2892 KB |
Output is correct |
| 33 |
Incorrect |
22 ms |
3392 KB |
Output isn't correct |
| 34 |
Execution timed out |
1055 ms |
3544 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1073 ms |
5440 KB |
Time limit exceeded |
| 36 |
Incorrect |
23 ms |
3520 KB |
Output isn't correct |
| 37 |
Execution timed out |
1069 ms |
3512 KB |
Time limit exceeded |
| 38 |
Execution timed out |
1045 ms |
6192 KB |
Time limit exceeded |
| 39 |
Incorrect |
25 ms |
3660 KB |
Output isn't correct |
| 40 |
Execution timed out |
1090 ms |
3784 KB |
Time limit exceeded |
| 41 |
Execution timed out |
1073 ms |
7932 KB |
Time limit exceeded |
| 42 |
Incorrect |
45 ms |
3804 KB |
Output isn't correct |
| 43 |
Execution timed out |
1072 ms |
3852 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1066 ms |
6836 KB |
Time limit exceeded |
| 45 |
Incorrect |
46 ms |
3876 KB |
Output isn't correct |
| 46 |
Execution timed out |
1090 ms |
4160 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1077 ms |
7724 KB |
Time limit exceeded |
| 48 |
Incorrect |
49 ms |
4148 KB |
Output isn't correct |
| 49 |
Execution timed out |
1076 ms |
4304 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1094 ms |
9576 KB |
Time limit exceeded |
| 51 |
Incorrect |
49 ms |
4324 KB |
Output isn't correct |
| 52 |
Execution timed out |
1091 ms |
4584 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1082 ms |
9328 KB |
Time limit exceeded |
| 54 |
Incorrect |
75 ms |
4488 KB |
Output isn't correct |
| 55 |
Execution timed out |
1088 ms |
4592 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1092 ms |
7484 KB |
Time limit exceeded |
| 57 |
Incorrect |
81 ms |
4708 KB |
Output isn't correct |
| 58 |
Execution timed out |
1097 ms |
5048 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1085 ms |
9036 KB |
Time limit exceeded |
| 60 |
Incorrect |
78 ms |
4848 KB |
Output isn't correct |
| 61 |
Execution timed out |
1088 ms |
5072 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1076 ms |
10304 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1063 ms |
8644 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1070 ms |
7288 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1090 ms |
7712 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1093 ms |
9052 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1096 ms |
8752 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1095 ms |
7372 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1081 ms |
7328 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1098 ms |
7376 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1094 ms |
7512 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1095 ms |
17276 KB |
Time limit exceeded |
| 73 |
Runtime error |
261 ms |
65540 KB |
Execution killed with signal 9 |
| 74 |
Runtime error |
252 ms |
65540 KB |
Execution killed with signal 9 |
| 75 |
Runtime error |
254 ms |
65540 KB |
Execution killed with signal 9 |
| 76 |
Runtime error |
257 ms |
65540 KB |
Execution killed with signal 9 |
| 77 |
Runtime error |
258 ms |
65540 KB |
Execution killed with signal 9 |
| 78 |
Runtime error |
256 ms |
65540 KB |
Execution killed with signal 9 |
| 79 |
Runtime error |
263 ms |
65540 KB |
Execution killed with signal 9 |
| 80 |
Runtime error |
256 ms |
65540 KB |
Execution killed with signal 9 |
| 81 |
Runtime error |
248 ms |
65540 KB |
Execution killed with signal 9 |
| 82 |
Runtime error |
256 ms |
65540 KB |
Execution killed with signal 9 |
| 83 |
Runtime error |
252 ms |
65540 KB |
Execution killed with signal 9 |
| 84 |
Runtime error |
251 ms |
65540 KB |
Execution killed with signal 9 |
| 85 |
Runtime error |
540 ms |
65540 KB |
Execution killed with signal 9 |
| 86 |
Runtime error |
252 ms |
65540 KB |
Execution killed with signal 9 |
| 87 |
Runtime error |
259 ms |
65540 KB |
Execution killed with signal 9 |
| 88 |
Runtime error |
246 ms |
65540 KB |
Execution killed with signal 9 |
| 89 |
Runtime error |
250 ms |
65540 KB |
Execution killed with signal 9 |
| 90 |
Runtime error |
253 ms |
65540 KB |
Execution killed with signal 9 |
| 91 |
Runtime error |
247 ms |
65540 KB |
Execution killed with signal 9 |
| 92 |
Runtime error |
246 ms |
65540 KB |
Execution killed with signal 9 |
