#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize ("Ofast")
#pragma GCC target ("fma,avx,avx2")
#define ends dfdsfdsf
const int INF=1e8;
pair<pair<int,int>,char> nxt[502][502][4];
vector<pair<pair<int,int>,char> >g[502][502][4];
vector<pair<int,int> >g1[502][502];
char table[502][502];
int r,n,m;
vector<pair<pair<int,int>,char> >ends;
pair<pair<int,int>,char> actual_nxt[502][502][4];
bool not_valid(pair<int,int> p)
{
int x=p.first,y=p.second;
if(x<1||y<1||x>n||y>m)return 1;
return table[x][y]=='x';
}
int dp[45][502][502];
pair<int,int> where[10];
int number[10][10];
void pre()
{
int cnt=0;
for(int i=1;i<=9;++i)
{
for(int j=i;j<=9;++j)
{
number[i][j]=++cnt;
}
}
}
vector<pair<int,int> >pq[2500000];
int main()
{
pre();
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin>>r>>m>>n;
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
cin>>table[i][j];
if(isdigit(table[i][j]))
{
where[table[i][j]-'0']={i,j};
}
}
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
if(table[i][j]=='x')continue;
if(table[i][j]=='A')
{
nxt[i][j][0]={{i,j-1},3};
nxt[i][j][1]={{i-1,j},0};
nxt[i][j][2]={{i,j+1},1};
nxt[i][j][3]={{i+1,j},2};
}
else if(table[i][j]=='C')
{
nxt[i][j][0]={{i,j+1},1};
nxt[i][j][1]={{i+1,j},2};
nxt[i][j][2]={{i,j-1},3};
nxt[i][j][3]={{i-1,j},0};
}
else
{
nxt[i][j][0]={{i-1,j},0};
nxt[i][j][1]={{i,j+1},1};
nxt[i][j][2]={{i+1,j},2};
nxt[i][j][3]={{i,j-1},3};
}
for(int l=0;l<4;++l)
{
if(not_valid(nxt[i][j][l].first))
{
ends.push_back({{i,j},l});
}
g[nxt[i][j][l].first.first][nxt[i][j][l].first.second][nxt[i][j][l].second].push_back({{i,j},l});
}
}
}
queue<pair<pair<int,int>,char> >qq;
for(auto xd:ends)
{
qq.push(xd);
actual_nxt[xd.first.first][xd.first.second][xd.second]=xd;
}
while(!qq.empty())
{
auto u=qq.front();
qq.pop();
for(auto xd:g[u.first.first][u.first.second][u.second])
{
actual_nxt[xd.first.first][xd.first.second][xd.second]=actual_nxt[u.first.first][u.first.second][u.second];
qq.push(xd);
}
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
for(int l=0;l<4;++l)
{
int x,y,z;
x=actual_nxt[i][j][l].first.first;
y=actual_nxt[i][j][l].first.second;
z=actual_nxt[i][j][l].second;
if(x==i&&y==j&&z==l)continue;
g1[i][j].push_back({x,y});
}
}
}
for(int r1=1;r1<=r;++r1)
{
for(int r2=1;r2<=r;++r2)
{
for(int i1=1;i1<=n;++i1)
{
for(int i2=1;i2<=m;++i2)
{
dp[number[r1][r2]][i1][i2]=INF;
}
}
}
}
queue<pair<int,int> >q;
for(int i=1;i<=r;++i)
{
int x,y;
x=where[i].first;
y=where[i].second;
q.push({x,y});
dp[number[i][i]][x][y]=0;
while(!q.empty())
{
tie(x,y)=q.front();
q.pop();
for(auto xd:g1[x][y])
{
if(dp[number[i][i]][xd.first][xd.second]>dp[number[i][i]][x][y]+1)
{
dp[number[i][i]][xd.first][xd.second]=dp[number[i][i]][x][y]+1;
q.push(xd);
}
}
}
}
vector<int>dps;
for(int len=2;len<=r;++len)
{
for(int r1=1;r1+len-1<=r;++r1)
{
int r2=r1+len-1;
int cc=number[r1][r2];
for(int mid=r1;mid<r2;++mid)
{
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
dp[cc][i][j]=min(dp[cc][i][j],dp[number[r1][mid]][i][j]+dp[number[mid+1][r2]][i][j]);
}
}
}
int mindp=INF;
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
mindp=min(mindp,dp[cc][i][j]);
if(dp[cc][i][j]<INF)
{
pq[dp[cc][i][j]].push_back({i,j});
dps.push_back(dp[cc][i][j]);
}
}
}
if(mindp<INF)
{
for(auto xd:pq[mindp])q.push({xd.first,xd.second});
pq[mindp].clear();
}
while(!q.empty())
{
int x,y;
tie(x,y)=q.front();
q.pop();
for(auto xd:g1[x][y])
{
if(dp[cc][x][y]+1<dp[cc][xd.first][xd.second])
{
dp[cc][xd.first][xd.second]=dp[cc][x][y]+1;
q.push(xd);
}
}
if(dp[cc][x][y]+1<INF&&pq[dp[cc][x][y]+1].size()!=0)
{
for(auto xd:pq[dp[cc][x][y]+1])
{
if(dp[cc][xd.first][xd.second]!=dp[cc][x][y]+1)continue;
q.push(xd);
}
pq[dp[cc][x][y]+1].clear();
}
}
for(auto xd:dps)pq[xd].clear();
dps.clear();
}
}
/*for(int i1=1;i1<=r;i1++)
{
for(int i2=i1;i2<=r;i2++)
{
cout<<i1<<"-"<<i2<<endl;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(dp[i1][i2][i][j]<INF)cout<<dp[i1][i2][i][j];
else cout<<"x";
}
cout<<endl;
}
}
}*/
int ans=INF;
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m;++j)
{
ans=min(ans,dp[number[1][r]][i][j]);
}
}
if(ans==INF)cout<<"-1\n";
else
{
cout<<ans<<'\n';
}
return 0;
}
Compilation message
robots.cpp: In function 'int main()':
robots.cpp:85:73: warning: array subscript has type 'char' [-Wchar-subscripts]
85 | g[nxt[i][j][l].first.first][nxt[i][j][l].first.second][nxt[i][j][l].second].push_back({{i,j},l});
| ~~~~~~~~~~~~~^~~~~~
robots.cpp:93:50: warning: array subscript has type 'char' [-Wchar-subscripts]
93 | actual_nxt[xd.first.first][xd.first.second][xd.second]=xd;
| ~~~^~~~~~
robots.cpp:99:50: warning: array subscript has type 'char' [-Wchar-subscripts]
99 | for(auto xd:g[u.first.first][u.first.second][u.second])
| ~~^~~~~~
robots.cpp:101:51: warning: array subscript has type 'char' [-Wchar-subscripts]
101 | actual_nxt[xd.first.first][xd.first.second][xd.second]=actual_nxt[u.first.first][u.first.second][u.second];
| ~~~^~~~~~
robots.cpp:101:103: warning: array subscript has type 'char' [-Wchar-subscripts]
101 | actual_nxt[xd.first.first][xd.first.second][xd.second]=actual_nxt[u.first.first][u.first.second][u.second];
| ~~^~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 2 |
Correct |
63 ms |
88684 KB |
Output is correct |
| 3 |
Correct |
65 ms |
88684 KB |
Output is correct |
| 4 |
Correct |
60 ms |
88812 KB |
Output is correct |
| 5 |
Correct |
64 ms |
88940 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 2 |
Correct |
63 ms |
88684 KB |
Output is correct |
| 3 |
Correct |
65 ms |
88684 KB |
Output is correct |
| 4 |
Correct |
60 ms |
88812 KB |
Output is correct |
| 5 |
Correct |
64 ms |
88940 KB |
Output is correct |
| 6 |
Correct |
60 ms |
88764 KB |
Output is correct |
| 7 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 8 |
Correct |
61 ms |
88812 KB |
Output is correct |
| 9 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 10 |
Correct |
61 ms |
88812 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 2 |
Correct |
63 ms |
88684 KB |
Output is correct |
| 3 |
Correct |
65 ms |
88684 KB |
Output is correct |
| 4 |
Correct |
60 ms |
88812 KB |
Output is correct |
| 5 |
Correct |
64 ms |
88940 KB |
Output is correct |
| 6 |
Correct |
60 ms |
88764 KB |
Output is correct |
| 7 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 8 |
Correct |
61 ms |
88812 KB |
Output is correct |
| 9 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 10 |
Correct |
61 ms |
88812 KB |
Output is correct |
| 11 |
Correct |
163 ms |
137248 KB |
Output is correct |
| 12 |
Correct |
107 ms |
107700 KB |
Output is correct |
| 13 |
Correct |
117 ms |
127136 KB |
Output is correct |
| 14 |
Correct |
250 ms |
139680 KB |
Output is correct |
| 15 |
Correct |
156 ms |
134816 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 2 |
Correct |
63 ms |
88684 KB |
Output is correct |
| 3 |
Correct |
65 ms |
88684 KB |
Output is correct |
| 4 |
Correct |
60 ms |
88812 KB |
Output is correct |
| 5 |
Correct |
64 ms |
88940 KB |
Output is correct |
| 6 |
Correct |
60 ms |
88764 KB |
Output is correct |
| 7 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 8 |
Correct |
61 ms |
88812 KB |
Output is correct |
| 9 |
Correct |
61 ms |
88684 KB |
Output is correct |
| 10 |
Correct |
61 ms |
88812 KB |
Output is correct |
| 11 |
Correct |
163 ms |
137248 KB |
Output is correct |
| 12 |
Correct |
107 ms |
107700 KB |
Output is correct |
| 13 |
Correct |
117 ms |
127136 KB |
Output is correct |
| 14 |
Correct |
250 ms |
139680 KB |
Output is correct |
| 15 |
Correct |
156 ms |
134816 KB |
Output is correct |
| 16 |
Runtime error |
356 ms |
163840 KB |
Execution killed with signal 9 |
| 17 |
Halted |
0 ms |
0 KB |
- |
