OJ-Problems-Source/HDOJ/5094_autoAC.cpp

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C++
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#include<cstdio>
#include<cstring>
#include<queue>
using namespace std;
int n, m, p;
int door[51][51][4], map[51][51];
bool vis[51][51][1<<10];
int xl[4]={-1,1,0,0};
int yl[4]={0,0,-1,1};
int getd(int a, int b, int c, int d){
if(a==c){
if(b<d) return 3;
return 2;
}
else{
if(a<c) return 1;
return 0;
}
}
struct Node{
int x, y, st, u;
Node(){}
Node(int x, int y, int st, int u):x(x),y(y),st(st),u(u){}
};
int solve(){
if(n==1 && m==1) return 0;
queue<Node> Q;
Q.push(Node(1,1,map[1][1],0));
while(!Q.empty()){
Node nd = Q.front(); Q.pop();
if(vis[nd.x][nd.y][nd.st]) continue;
vis[nd.x][nd.y][nd.st] = 1;
for(int i=0; i<4; i++){
int a = nd.x+xl[i];
int b = nd.y+yl[i];
if(a<1 || a>n || b<1 || b>m) continue;
if(!door[nd.x][nd.y][i]) continue;
int st = nd.st;
if(door[nd.x][nd.y][i]>0){
int d = 1<<(door[nd.x][nd.y][i]-1);
if(!(st&d)) continue;
}
if(a==n && b==m) return nd.u+1;
st |= map[a][b];
if(!vis[a][b][st]) Q.push(Node(a,b,st,nd.u+1));
}
}
return -1;
}
int main(){
while(~scanf("%d %d %d", &n, &m, &p)){
memset(door, -1, sizeof(door));
memset(map, 0, sizeof(map));
memset(vis, 0, sizeof(vis));
int k;
scanf("%d", &k);
int a, b, c, d, e;
while(k--){
scanf("%d %d %d %d %d", &a, &b, &c, &d, &e);
door[a][b][getd(a,b,c,d)] = e;
door[c][d][getd(c,d,a,b)] = e;
}
scanf("%d", &k);
while(k--){
scanf("%d %d %d", &a, &b, &c);
map[a][b] |= (1<<(c-1));
}
printf("%d\n", solve());
}
return 0;
}