| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 138843 |
2019-07-30T13:14:35 Z |
StevenH |
Mecho (IOI09_mecho) |
C++14 |
|
1000 ms |
65540 KB |
#include <iostream>
#include <fstream>
#include <cstdio>
#include <queue>
#include <cstring>
using namespace std;
int _map[805][805];
int map[805][805];
int n,s;
struct Node{
int x,y,tm;
};
void print()
{
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
printf("%c",map[i][j]);
printf("\n");
}
}
void run(int t)
{
for(int i=0;i<t;i++)
{
for(int j=0;j<n;j++)
for(int k=0;k<n;k++)
if(map[j][k]=='H')
{
if(j+1< n && map[j+1][k]=='G')map[j+1][k]='K';
if(j-1>=0 && map[j-1][k]=='G')map[j-1][k]='K';
if(k+1< n && map[j][k+1]=='G')map[j][k+1]='K';
if(k-1>=0 && map[j][k-1]=='G')map[j][k-1]='K';
}
for(int j=0;j<n;j++)
for(int k=0;k<n;k++)
if(map[j][k]=='K')
map[j][k]='H';
}
}
void copy()
{
for(int i=0;i<n;i++)
for(int j=0;j<n;j++)
map[i][j]=_map[i][j];
}
bool f[805][805];
bool vis[805][805];
int ss[2000000][2];
int k;
bool judge(int x,int y)
{
if(x<0 || y<0 || x>=n || y>=n)return 0;
if(vis[x][y])return 0;
if(map[x][y]=='T')return 0;
if(map[x][y]=='H')return 0;
return 1;
}
int flag;
void dfs(int x,int y,int p)
{
//printf("%d %d\n",x,y);
f[x][y]=1;
if(flag)return;
if(map[x][y]=='D')
{
//printf("%d\n",p);
k=1;
ss[0][0]=x;
ss[0][1]=y;
flag=1;
return;
}
if(p==s)
{
ss[k][0]=x;
ss[k][1]=y;
k++;
f[x][y]=0;
return;
}
if(judge(x+1,y))dfs(x+1,y,p+1);
if(judge(x-1,y))dfs(x-1,y,p+1);
if(judge(x,y+1))dfs(x,y+1,p+1);
if(judge(x,y-1))dfs(x,y-1,p+1);
}
bool bfs(int sx,int sy,int t)
{
memset(vis,0,sizeof(vis));
copy();
run(t);
queue<Node> que;
que.push({sx,sy,0});
vis[sx][sy]=1;
int tm=0;
while(!que.empty())
{
Node now=que.front();
if(now.tm>tm)
run(1),tm++;
que.pop();
k=0;
memset(f,0,sizeof(f));
flag=0;
dfs(now.x,now.y,0);
//if(k>0)printf("%d %d %d\n",now.x,now.y,k);
for(int i=0;i<k;i++)
{
int x=ss[i][0];
int y=ss[i][1];
vis[x][y]=1;
if(map[x][y]=='D')return 1;
else que.push({x,y,now.tm+1});
}
//if(k>0)printf("\n");
}
return 0;
}
int main()
{
//freopen("sample.in","rb",stdin);
int sx,sy;
scanf("%d%d",&n,&s);
//printf("%d %d",n,s);
for(int i=0;i<n;i++)
for(int j=0;j<n;j++)
{
char res;
while(scanf("%c",&_map[i][j]))
if(_map[i][j]>='A' && _map[i][j]<='Z')
break;
if(_map[i][j]=='M')
sx=i,sy=j;
}
if(!bfs(sx,sy,0))printf("-1");
else
{
if(!(sx,sy,1))printf("0");
else
{
int left=1,right=1;
while(bfs(sx,sy,right))left=right,right*=2;
if(right==1)printf("1");
else
{
right--;
//printf("%d*%d\n",left,right);
while(left<right)
{
int mid=(left+right)/2;
if((left+right)%2==1)mid++;
if(bfs(sx,sy,mid))left=mid;
else right=mid-1;
}
printf("%d",left);
}
}
}
return 0;
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:133:32: warning: format '%c' expects argument of type 'char*', but argument 2 has type 'int*' [-Wformat=]
while(scanf("%c",&_map[i][j]))
~~~~~~~~~~~^
mecho.cpp:132:9: warning: unused variable 'res' [-Wunused-variable]
char res;
^~~
mecho.cpp:142:11: warning: left operand of comma operator has no effect [-Wunused-value]
if(!(sx,sy,1))printf("0");
^~
mecho.cpp:142:14: warning: right operand of comma operator has no effect [-Wunused-value]
if(!(sx,sy,1))printf("0");
^
mecho.cpp:127:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&s);
~~~~~^~~~~~~~~~~~~~
mecho.cpp:146:13: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized]
while(bfs(sx,sy,right))left=right,right*=2;
~~~^~~~~~~~~~~~~
mecho.cpp:146:13: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized]
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
4 ms |
1656 KB |
Output isn't correct |
| 2 |
Incorrect |
5 ms |
1656 KB |
Output isn't correct |
| 3 |
Incorrect |
4 ms |
1656 KB |
Output isn't correct |
| 4 |
Incorrect |
4 ms |
1656 KB |
Output isn't correct |
| 5 |
Incorrect |
4 ms |
1656 KB |
Output isn't correct |
| 6 |
Correct |
6 ms |
1656 KB |
Output is correct |
| 7 |
Runtime error |
191 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 8 |
Incorrect |
4 ms |
1656 KB |
Output isn't correct |
| 9 |
Execution timed out |
1064 ms |
3100 KB |
Time limit exceeded |
| 10 |
Correct |
8 ms |
1784 KB |
Output is correct |
| 11 |
Correct |
20 ms |
1660 KB |
Output is correct |
| 12 |
Execution timed out |
1061 ms |
2040 KB |
Time limit exceeded |
| 13 |
Incorrect |
71 ms |
1912 KB |
Output isn't correct |
| 14 |
Correct |
155 ms |
2028 KB |
Output is correct |
| 15 |
Incorrect |
10 ms |
1656 KB |
Output isn't correct |
| 16 |
Correct |
361 ms |
1836 KB |
Output is correct |
| 17 |
Incorrect |
12 ms |
1784 KB |
Output isn't correct |
| 18 |
Execution timed out |
1060 ms |
2160 KB |
Time limit exceeded |
| 19 |
Incorrect |
21 ms |
1784 KB |
Output isn't correct |
| 20 |
Execution timed out |
1067 ms |
3576 KB |
Time limit exceeded |
| 21 |
Incorrect |
49 ms |
1912 KB |
Output isn't correct |
| 22 |
Runtime error |
173 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 23 |
Incorrect |
133 ms |
1952 KB |
Output isn't correct |
| 24 |
Runtime error |
133 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 25 |
Incorrect |
217 ms |
2040 KB |
Output isn't correct |
| 26 |
Runtime error |
141 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 27 |
Incorrect |
410 ms |
2048 KB |
Output isn't correct |
| 28 |
Runtime error |
129 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 29 |
Incorrect |
474 ms |
2080 KB |
Output isn't correct |
| 30 |
Runtime error |
131 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 31 |
Incorrect |
585 ms |
2112 KB |
Output isn't correct |
| 32 |
Runtime error |
136 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 33 |
Execution timed out |
1075 ms |
3960 KB |
Time limit exceeded |
| 34 |
Runtime error |
133 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 35 |
Runtime error |
127 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 36 |
Execution timed out |
1063 ms |
4344 KB |
Time limit exceeded |
| 37 |
Runtime error |
152 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 38 |
Runtime error |
127 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 39 |
Execution timed out |
1080 ms |
4600 KB |
Time limit exceeded |
| 40 |
Runtime error |
140 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 41 |
Runtime error |
137 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 42 |
Execution timed out |
1073 ms |
4984 KB |
Time limit exceeded |
| 43 |
Runtime error |
142 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 44 |
Runtime error |
130 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 45 |
Execution timed out |
1053 ms |
5368 KB |
Time limit exceeded |
| 46 |
Runtime error |
149 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 47 |
Runtime error |
134 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 48 |
Execution timed out |
1053 ms |
5672 KB |
Time limit exceeded |
| 49 |
Runtime error |
160 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 50 |
Runtime error |
146 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 51 |
Execution timed out |
1069 ms |
6136 KB |
Time limit exceeded |
| 52 |
Runtime error |
217 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 53 |
Runtime error |
144 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 54 |
Execution timed out |
1067 ms |
6492 KB |
Time limit exceeded |
| 55 |
Runtime error |
152 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 56 |
Runtime error |
141 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 57 |
Execution timed out |
1025 ms |
6904 KB |
Time limit exceeded |
| 58 |
Runtime error |
156 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 59 |
Runtime error |
158 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 60 |
Execution timed out |
1066 ms |
7180 KB |
Time limit exceeded |
| 61 |
Runtime error |
169 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 62 |
Runtime error |
147 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 63 |
Execution timed out |
1076 ms |
7308 KB |
Time limit exceeded |
| 64 |
Runtime error |
237 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 65 |
Execution timed out |
1078 ms |
7288 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1081 ms |
7416 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1081 ms |
7300 KB |
Time limit exceeded |
| 68 |
Runtime error |
215 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 69 |
Runtime error |
207 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 70 |
Execution timed out |
1085 ms |
11196 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1072 ms |
7952 KB |
Time limit exceeded |
| 72 |
Runtime error |
210 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 73 |
Execution timed out |
1062 ms |
8416 KB |
Time limit exceeded |
| 74 |
Runtime error |
134 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 75 |
Execution timed out |
1067 ms |
10020 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1063 ms |
7564 KB |
Time limit exceeded |
| 77 |
Runtime error |
133 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 78 |
Execution timed out |
1069 ms |
38920 KB |
Time limit exceeded |
| 79 |
Runtime error |
136 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 80 |
Execution timed out |
1035 ms |
38912 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1058 ms |
8364 KB |
Time limit exceeded |
| 82 |
Runtime error |
133 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 83 |
Execution timed out |
1070 ms |
45656 KB |
Time limit exceeded |
| 84 |
Runtime error |
204 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 85 |
Runtime error |
190 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 86 |
Runtime error |
192 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 87 |
Runtime error |
192 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 88 |
Runtime error |
192 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 89 |
Runtime error |
214 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 90 |
Runtime error |
203 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 91 |
Runtime error |
191 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 92 |
Runtime error |
191 ms |
65536 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
