#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N=505;
const int H=N*N;
const int inf=1e9+7;
int n,m,k,nm;
int ID(int x, int y){ return (x-1)*m+y;}
int go[N][N][4],Move[4][2]={{0,1},{-1,0},{0,-1},{1,0}};
char base[N][N];
int Get(int x, int y, int d)
{
if(base[x][y]=='x' || x==0 || y==0 || x>n || y>m) return ID(x-Move[d][0],y-Move[d][1]);
if(go[x][y][d]) return go[x][y][d];
go[x][y][d]=-1;
if(base[x][y]=='A') go[x][y][d]=Get(x+Move[(d+1)%4][0],y+Move[(d+1)%4][1],(d+1)%4);
else if(base[x][y]=='C') go[x][y][d]=Get(x+Move[(d+3)%4][0],y+Move[(d+3)%4][1],(d+3)%4);
else go[x][y][d]=Get(x+Move[d][0],y+Move[d][1],d);
return go[x][y][d];
}
vector<int> E[H];
int dist[10][10][H];
void BFS(int st, int id)
{
queue<int> q;
for(int i=1;i<=nm;i++) dist[id][id][i]=-1;
dist[id][id][st]=0;
q.push(st);
while(q.size())
{
int x=q.front();
q.pop();
for(int y:E[x]) if(dist[id][id][y]==-1)
{
dist[id][id][y]=dist[id][id][x]+1;
q.push(y);
}
}
for(int i=1;i<=nm;i++) if(dist[id][id][i]==-1) dist[id][id][i]=inf;
}
int tmp_d[H];
queue<int> q[H*10];
void Dijkstra()
{
int mn=inf,work=0;
for(int i=1;i<=nm;i++) if(tmp_d[i]!=inf) q[tmp_d[i]].push(i),mn=min(mn,tmp_d[i]),work++;
for(int ptr=mn;ptr<H*10 && work>0;ptr++)
{
while(q[ptr].size())
{
int x=q[ptr].front();
q[ptr].pop();
if(ptr!=tmp_d[x]) continue;
work--;
for(int y:E[x]) if(tmp_d[y]>tmp_d[x]+1)
{
tmp_d[y]=tmp_d[x]+1;
if(tmp_d[y]>=H*10) continue;
q[tmp_d[y]].push(y);
work++;
}
}
}
}
int main()
{
scanf("%i %i %i",&k,&m,&n);nm=n*m;
for(int i=1;i<=n;i++) scanf("%s",base[i]+1);
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++)
{
for(int d=0;d<4;d++)
{
if(Get(i,j,d)!=-1) E[ID(i,j)].pb(go[i][j][d]);
}
}
for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) if(base[i][j]>='1' && base[i][j]<='9')
{
int id=base[i][j]-'0';
BFS(ID(i,j),id);
}
for(int len=2;len<=k;len++) for(int i=1;i<=k-len+1;i++)
{
int j=i+len-1;
for(int u=1;u<=nm;u++) dist[i][j][u]=inf;
for(int z=i;z<j;z++)
{
for(int u=1;u<=nm;u++) if(dist[i][z][u]!=-1 && dist[z+1][j][u]!=-1)
{
int sum=dist[i][z][u]+dist[z+1][j][u];
if(dist[i][j][u]==-1 || sum<dist[i][j][u]) dist[i][j][u]=sum;
}
}
for(int u=1;u<=nm;u++) tmp_d[u]=dist[i][j][u];
Dijkstra();
for(int u=1;u<=nm;u++) dist[i][j][u]=tmp_d[u];
}
int ans=-1;
for(int u=1;u<=nm;u++) if(dist[1][k][u]!=inf)
{
if(ans==-1 || ans>dist[1][k][u]) ans=dist[1][k][u];
}
printf("%i\n",ans);
return 0;
}
Compilation message
robots.cpp: In function 'int main()':
robots.cpp:67:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i %i %i",&k,&m,&n);nm=n*m;
~~~~~^~~~~~~~~~~~~~~~~~~~~
robots.cpp:68:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=1;i<=n;i++) scanf("%s",base[i]+1);
~~~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
145 ms |
163844 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
145 ms |
163844 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
145 ms |
163844 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
145 ms |
163844 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
