scratch_szc @ 2024-10-27 09:12:40
#include<bits/stdc++.h>
//#pragma GCC optimize(2)
#define int long long
#define INF LLONG_MAX
#define _INF LLONG_MIN
#define ios ios::sync_with_stdio(0),cout.tie(0),cin.tie(0);
using namespace std;
int fx[4]={0,1,0,-1};
int fy[4]={1,0,-1,0};
int n,m;
const int N=1e3+11;
char mp[N][N];
bool flag[N][N];
int res=1;
void print(int a,int b,int c,int d,int e){cout<<a<<' '<<b<<' '<<c<<' '<<d<<' '<<e<<'\n';}
void dfs(int x,int y,int d,int k){
flag[x][y]=1;
if(k==0)return ;
int dx=x+fx[d];
int dy=y+fy[d];
if(mp[dx][dy]=='x'||dx<1||dx>n||dy<1||dy>m||flag[x][y]==0)dfs(x,y,(d+1)%4,k-1);
else res++,dfs(dx,dy,d,k-1);
}
signed main(){
ios
int t;
cin>>t;
for(int i=1;i<=t;i++){
cin>>n>>m;
int k;
cin>>k;
int xx,yy,dd;
cin>>xx>>yy>>dd;
for(int j=1;j<=n;j++)for(int z=1;z<=m;z++)cin>>mp[j][z];
dfs(xx,yy,dd,k);
cout<<res<<'\n';
res=1;
}
return 0;
}
by leozhao123 @ 2024-10-27 09:21:28
@scratch_szc 走过的点重复算了
by scratch_szc @ 2024-10-27 09:22:15
@leozhao123 怎么改
by leozhao123 @ 2024-10-27 09:23:09
@scratch_szc flag 没初始化
by leozhao123 @ 2024-10-27 09:24:39
@scratch_szc 设一个 vis[][] 数组记录走过的点,++res 时判断!vis[x][y]
by leozhao123 @ 2024-10-27 09:25:47
@scratch_szc 建议直接在主函数里循环模拟,dfs 容易爆
by scratch_szc @ 2024-10-27 09:27:15
https://www.luogu.com.cn/record/185130831 @leozhao123 40分
by leozhao123 @ 2024-10-27 09:27:41
@scratch_szc ?所以你这 flag 有何意义?
by scratch_szc @ 2024-10-27 09:28:35
@leozhao123 所以怎么改(代码)
by leozhao123 @ 2024-10-27 09:30:55
@scratch_szc 呃 电脑不在身边
by scratch_szc @ 2024-10-27 09:31:34
@leozhao123 改了,50分