| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 138704 |
2019-07-30T08:51:23 Z |
Boxworld |
Mecho (IOI09_mecho) |
C++14 |
|
1000 ms |
9720 KB |
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
const int MX=1000,inf=0x7fffffff;
int dx[4]={1,-1,0,0},dy[4]={0,0,1,-1};
char G[MX][MX];
int d[MX][MX],d1[MX][MX];
int n,s,sx,sy,fx,fy,ans=-1;
queue<int> Q1[2];
int bfs(int time){
memset(d1,0,sizeof(d1));
d1[sx][sy]=-1;
queue<int> Q;
Q.push(sx*MX+sy);
while(!Q.empty()){
int x=Q.front()/MX,y=Q.front()%MX;Q.pop();
// printf("x=%d,y=%d time=%d\n",x,y,d1[x][y]/s+time);
if (time>0&&d1[x][y]/s+time>=d[x][y])continue;
for (int i=0;i<4;i++){
int X=x+dx[i],Y=y+dy[i];
if (X<1||X>n||Y<1||Y>n)continue;
if (X==fx&&Y==fy)return 1;
if (G[X][Y]=='T'||G[X][Y]=='H'||d1[X][Y]>0)continue;
d1[X][Y]=d1[x][y]+1;
Q.push(X*MX+Y);
// printf("INQ T:%d X:%d Y:%d\n",d1[X][Y],X,Y);
}
// printf("#\n");
// for (int i=1;i<=n;i++){
// for (int j=1;j<=n;j++)printf("%2d",d1[i][j]);printf("\n");
// }
}
return 0;
}
int main(){
scanf("%d%d",&n,&s);
memset(d,-1,sizeof(d));
for (int i=1;i<=n;i++){
scanf("%s",G[i]+1);
for (int j=1;j<=n;j++){
if (G[i][j]=='H')d[i][j]=0,Q1[0].push(i*MX+j);
if (G[i][j]=='M')sx=i,sy=j;
if (G[i][j]=='D')d[i][j]=inf,fx=i,fy=j;
}
}
int cnt=0;
for (int t=1;;t++){
if (Q1[cnt].empty())break;
while(!Q1[cnt].empty()){
int xy=Q1[cnt].front();Q1[cnt].pop();
int x=xy/MX,y=xy%MX;
for (int i=0;i<4;i++){
int X=x+dx[i],Y=y+dy[i];
if (d[X][Y]>=0||G[X][Y]=='D'||G[X][Y]=='T')continue;
d[X][Y]=t;
Q1[1-cnt].push(X*MX+Y);
}
}
cnt=1-cnt;
}
for (int t=d[sx][sy];t>=0;t--)
if (bfs(t)){
printf("%d\n",t);
return 0;
}
printf("-1");
/* if (bfs(-1)){
ans=0;
int l=0,m,r=d[sx][sy];
while(l<r){
m=(l+r)/2;
if (bfs(m)){
l=m+1;
ans=m;
}else{
r=m-1;
}
}
}
printf("%d\n",ans);*/
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&s);
~~~~~^~~~~~~~~~~~~~
mecho.cpp:39:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s",G[i]+1);
~~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 2 |
Incorrect |
31 ms |
8136 KB |
Output isn't correct |
| 3 |
Incorrect |
31 ms |
8188 KB |
Output isn't correct |
| 4 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 5 |
Correct |
31 ms |
8184 KB |
Output is correct |
| 6 |
Correct |
30 ms |
8184 KB |
Output is correct |
| 7 |
Execution timed out |
1067 ms |
9080 KB |
Time limit exceeded |
| 8 |
Incorrect |
32 ms |
8188 KB |
Output isn't correct |
| 9 |
Correct |
30 ms |
8184 KB |
Output is correct |
| 10 |
Correct |
31 ms |
8184 KB |
Output is correct |
| 11 |
Correct |
32 ms |
8184 KB |
Output is correct |
| 12 |
Incorrect |
33 ms |
8184 KB |
Output isn't correct |
| 13 |
Correct |
35 ms |
8184 KB |
Output is correct |
| 14 |
Incorrect |
38 ms |
8184 KB |
Output isn't correct |
| 15 |
Incorrect |
28 ms |
8184 KB |
Output isn't correct |
| 16 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 17 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 18 |
Incorrect |
31 ms |
8184 KB |
Output isn't correct |
| 19 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 20 |
Incorrect |
30 ms |
8204 KB |
Output isn't correct |
| 21 |
Incorrect |
31 ms |
8184 KB |
Output isn't correct |
| 22 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 23 |
Incorrect |
29 ms |
8188 KB |
Output isn't correct |
| 24 |
Incorrect |
31 ms |
8184 KB |
Output isn't correct |
| 25 |
Incorrect |
31 ms |
8188 KB |
Output isn't correct |
| 26 |
Incorrect |
31 ms |
8184 KB |
Output isn't correct |
| 27 |
Incorrect |
32 ms |
8184 KB |
Output isn't correct |
| 28 |
Incorrect |
31 ms |
8184 KB |
Output isn't correct |
| 29 |
Incorrect |
31 ms |
8312 KB |
Output isn't correct |
| 30 |
Incorrect |
31 ms |
8312 KB |
Output isn't correct |
| 31 |
Incorrect |
30 ms |
8184 KB |
Output isn't correct |
| 32 |
Incorrect |
29 ms |
8312 KB |
Output isn't correct |
| 33 |
Incorrect |
30 ms |
8696 KB |
Output isn't correct |
| 34 |
Incorrect |
31 ms |
8696 KB |
Output isn't correct |
| 35 |
Correct |
476 ms |
8696 KB |
Output is correct |
| 36 |
Incorrect |
34 ms |
8652 KB |
Output isn't correct |
| 37 |
Incorrect |
32 ms |
8696 KB |
Output isn't correct |
| 38 |
Correct |
754 ms |
8716 KB |
Output is correct |
| 39 |
Incorrect |
30 ms |
8700 KB |
Output isn't correct |
| 40 |
Incorrect |
30 ms |
8696 KB |
Output isn't correct |
| 41 |
Execution timed out |
1037 ms |
8696 KB |
Time limit exceeded |
| 42 |
Incorrect |
32 ms |
8824 KB |
Output isn't correct |
| 43 |
Incorrect |
29 ms |
8828 KB |
Output isn't correct |
| 44 |
Execution timed out |
1082 ms |
8792 KB |
Time limit exceeded |
| 45 |
Incorrect |
31 ms |
8828 KB |
Output isn't correct |
| 46 |
Incorrect |
28 ms |
8832 KB |
Output isn't correct |
| 47 |
Execution timed out |
1059 ms |
8824 KB |
Time limit exceeded |
| 48 |
Incorrect |
29 ms |
8824 KB |
Output isn't correct |
| 49 |
Incorrect |
29 ms |
8824 KB |
Output isn't correct |
| 50 |
Execution timed out |
1059 ms |
8824 KB |
Time limit exceeded |
| 51 |
Incorrect |
29 ms |
9080 KB |
Output isn't correct |
| 52 |
Incorrect |
30 ms |
9080 KB |
Output isn't correct |
| 53 |
Execution timed out |
1052 ms |
9080 KB |
Time limit exceeded |
| 54 |
Incorrect |
31 ms |
9084 KB |
Output isn't correct |
| 55 |
Incorrect |
31 ms |
9048 KB |
Output isn't correct |
| 56 |
Execution timed out |
1068 ms |
9208 KB |
Time limit exceeded |
| 57 |
Incorrect |
31 ms |
9128 KB |
Output isn't correct |
| 58 |
Incorrect |
30 ms |
9080 KB |
Output isn't correct |
| 59 |
Execution timed out |
1051 ms |
9208 KB |
Time limit exceeded |
| 60 |
Incorrect |
31 ms |
9208 KB |
Output isn't correct |
| 61 |
Incorrect |
32 ms |
9160 KB |
Output isn't correct |
| 62 |
Execution timed out |
1063 ms |
9208 KB |
Time limit exceeded |
| 63 |
Correct |
341 ms |
9240 KB |
Output is correct |
| 64 |
Execution timed out |
1073 ms |
9208 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1049 ms |
9208 KB |
Time limit exceeded |
| 66 |
Incorrect |
985 ms |
9352 KB |
Output isn't correct |
| 67 |
Execution timed out |
1055 ms |
9284 KB |
Time limit exceeded |
| 68 |
Correct |
170 ms |
9376 KB |
Output is correct |
| 69 |
Correct |
72 ms |
9340 KB |
Output is correct |
| 70 |
Incorrect |
138 ms |
9336 KB |
Output isn't correct |
| 71 |
Incorrect |
113 ms |
9336 KB |
Output isn't correct |
| 72 |
Incorrect |
334 ms |
9376 KB |
Output isn't correct |
| 73 |
Correct |
45 ms |
9432 KB |
Output is correct |
| 74 |
Correct |
456 ms |
9508 KB |
Output is correct |
| 75 |
Correct |
915 ms |
9636 KB |
Output is correct |
| 76 |
Correct |
778 ms |
9720 KB |
Output is correct |
| 77 |
Correct |
751 ms |
9720 KB |
Output is correct |
| 78 |
Execution timed out |
1076 ms |
9592 KB |
Time limit exceeded |
| 79 |
Correct |
239 ms |
9592 KB |
Output is correct |
| 80 |
Correct |
547 ms |
9628 KB |
Output is correct |
| 81 |
Execution timed out |
1083 ms |
9592 KB |
Time limit exceeded |
| 82 |
Correct |
596 ms |
9720 KB |
Output is correct |
| 83 |
Execution timed out |
1088 ms |
9592 KB |
Time limit exceeded |
| 84 |
Correct |
872 ms |
9692 KB |
Output is correct |
| 85 |
Correct |
489 ms |
9692 KB |
Output is correct |
| 86 |
Execution timed out |
1080 ms |
9592 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1073 ms |
9596 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1079 ms |
9592 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1075 ms |
9592 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1071 ms |
9592 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1079 ms |
9464 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1069 ms |
9592 KB |
Time limit exceeded |
