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| #include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <algorithm>
#include <sstream>
#include <map>
#include <set>
#include <queue>
#define REP(i,k,n) for(int i=k;i<n;i++)
#define rep(i,n) for(int i=0;i<n;i++)
#define INF 1<<30
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
int w, h, n;
int sx,sy,gx,gy;
int dx[4] = {1,0,-1,0};
int dy[4] = {0,1,0,-1};
bool can(int y, int x) {
if(0 <= y && y < h && 0 <= x && x < w) return true;
return false;
}
struct edge {
int from,to;
ll cost;
edge(int t,int c) : to(t),cost(c) {}
edge(int f,int t,int c) : from(f),to(t),cost(c) {}
bool operator<(const edge &e) const {
return cost < e.cost;
}
};
vector<edge> G[505*505 + 5];
ll d[505 * 505 + 5];
void dijkstra(int s, int n) {
priority_queue<P, vector<P>, greater<P> > que;
fill(d, d+n, INF);
d[s] = 0;
que.push(P(0,s));
while(que.size()) {
P p = que.top();
que.pop();
int v = p.second;
if(d[v] < p.first) continue;
rep(i, G[v].size()) {
edge e = G[v][i];
if(d[e.to] > d[v] + e.cost) {
d[e.to] = d[v] + e.cost;
que.push(P(d[e.to],e.to));
}
}
}
}
int main() {
cin >> w >> h >> n;
cin >> sx >> sy >> gx >> gy;
rep(i, h * w) {
G[i].clear();
}
w++;
h++;
rep(i, h) {
rep(j, w) {
rep(k, 4) {
int y = i + dy[k];
int x = j + dx[k];
if(can(y, x)) {
G[i*w + j].push_back(edge(y*w + x, 0));
}
}
}
}
rep(i, n) {
int y, x, t;
cin >> x >> y >> t;
string s;
cin >> s;
rep(k, t) {
rep(j, s.size()) {
int from = -1, to = -1;
if(s[j] == 'R' && x + 1 < w - 1) {
from = y * w + (x + 1);
to = (y + 1) * w + (x + 1);
x++;
} else if(s[j] == 'L' && 0 <= x - 1) {
from = y * w + x;
to = (y + 1) * w + x;
x--;
} else if(s[j] == 'U' && 0 <= y - 1) {
from = y * w + x;
to = y * w + (x + 1);
y--;
} else if(s[j] == 'D' && y + 1 < h - 1) {
from = (y + 1) * w + x;
to = (y + 1) * w + (x + 1);
y++;
}
if(from == -1 && to == -1) continue;
rep(k, G[from].size()) {
if(G[from][k].to == to) {
G[from][k].cost++;
}
}
rep(k, G[to].size()) {
if(G[to][k].to == from) {
G[to][k].cost++;
}
}
}
}
}
// rep(i, h) {
// rep(j, w) {
// cout << " --------- " << i << ", " << j << " :" << i * w + j << " |";
// rep(k, G[i*w + j].size()) {
// cout << "(" << G[i*w + j][k].to << ", " << G[i*w + j][k].cost << ") ";
// }
// cout << endl;
// }
// }
dijkstra(sy * w + sx, h * w);
// rep(i, h) {
// rep(j, w) {
// cout << d[i*w + j] << " ";
// }
// cout << endl;
// }
cout << d[gy * w + gx] << endl;
return 0;
}
|