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| #pragma GCC optimize(2)
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <queue>
using namespace std;
const int maxn = 100 + 2;
struct node {
int x;
int y;
int sum;
};
struct p {
char chr;
int t,v,x,y;
} store_fortress[101];
bool mark_fortress[maxn][maxn];
bool mark_map[maxn][maxn][1002];
bool mark_bullet[1002][maxn][maxn];
int m,n,k,d;
char dir;
int t,v,x,y;
int ds[5][2] = {{0,0},{1,0},{0,1},{-1,0},{0,-1}};
void treaval() {
for(int t = 1; t <= d ; t++) {
printf("%d>>>\n",t);
for(int i = 0 ; i <= m ; i++) {
for(int j = 0 ; j <= n ; j++) {
printf("%d ",mark_bullet[t][i][j]);
}
printf("\n");
}
printf(">>>>>>>>>\n");
}
}
void update(char id, int t,int v, int x,int y) {
if(id == 'W') {
int stop = 0;
for(int j = y - v,ini = 1; j >= 0; j -= v,ini ++) {
for(int k = ini; k <= d; k += t) {
mark_bullet[k][x][j] = true;
}
if(mark_fortress[x][j]){
break;
}
}
} else if(id == 'E') {
for(int j = y + v,ini = 1; j <= m; j += v,ini ++) {
for(int k = ini; k <= d; k += t) {
mark_bullet[k][x][j] = true;
}
if(mark_fortress[x][j]) {
break;
}
}
} else if(id == 'N') {
for(int j = x - v,ini = 1; j >= 0; j -= v,ini ++) {
for(int k = ini; k <= d; k += t) {
mark_bullet[k][j][y] = true;
}
if(mark_fortress[j][y]) {
break;
}
}
} else if(id == 'S') {
for(int j = x + v,ini = 1; j <= n; j += v,ini ++) {
for(int k = ini; k <= d; k += t) {
mark_bullet[k][j][y] = true;
}
if(mark_fortress[j][y]) {
break;
}
}
}
}
inline bool check(int x,int y,int t) {
if(mark_map[x][y][t] == 0 && mark_bullet[t][x][y] == 0 && mark_fortress[x][y] == 0 && x >= 0 && y >= 0 && x <= m && y <= n)
return 1;
return 0;
}
queue<node>q;
void bfs() {
node p,t;
p.x = 0 ;
p.y = 0;
p.sum = 0;
q.push(p);
mark_map[0][0][0] = 1;
while(!q.empty()) {
p = q.front();
q.pop();
if(p.x == m && p.y == n) {
printf("%d\n",p.sum);
while(!q.empty()) {
q.pop();
}
return ;
}
if(p.sum > d)
continue;
for(int i = 0 ; i <= 2 ; i++) {
t.x = p.x + ds[i][0];
t.y = p.y + ds[i][1];
t.sum = p.sum + 1;
if(check(t.x, t.y, t.sum)) {
mark_map[t.x][t.y][t.sum] = 1;
q.push(t);
}
}
}
printf("Bad luck!\n");
return ;
}
int main() {
while(scanf("%d %d %d %d",&m,&n,&k,&d) != EOF) {
getchar();
memset(mark_fortress,0,sizeof mark_fortress);
memset(mark_map,0,sizeof mark_map);
memset(mark_bullet,0,sizeof mark_bullet);
for(int i = 1 ; i <= k ; i++) {
scanf("%c %d %d %d %d",&store_fortress[i].chr,&store_fortress[i].t,&store_fortress[i].v,&store_fortress[i].x,&store_fortress[i].y);
getchar();
mark_fortress[store_fortress[i].x][store_fortress[i].y] = 1;
}
for(int i = 1; i <= k ; i++) {
update(store_fortress[i].chr,store_fortress[i].t,store_fortress[i].v,store_fortress[i].x,store_fortress[i].y);
}
bfs();
}
return 0;
}
|