https://www.luogu.org/problemnew/show/P1518

题解：模拟

/*
*@Author:   STZG
*@Language: C++
*/
#include <bits/stdc++.h>
#include<iostream>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<cstdio>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<deque>
#include<stack>
#include<cmath>
#include<list>
#include<map>
#include<set>
//#define DEBUG
#define RI register int
#define endl "\n"
using namespace std;
typedef long long ll;
//typedef __int128 lll;
const int N=10+10;
const int M=100000+10;
const int MOD=1e9+7;
const double PI = acos(-1.0);
const double EXP = 1E-8;
const int INF = 0x3f3f3f3f;
int t,n,m,k,p,l,r,u,v,cx,cy,ct,fx,fy,ft;
int ans,cnt,flag,temp,sum;
bool vis[N][N][4][N][N][4];
char str[N][N];
int dir[4][2]= {-1,0,0,1,1,0,0,-1};
int main()
{
#ifdef DEBUG
	freopen("input.in", "r", stdin);
	//freopen("output.out", "w", stdout);
#endif
    //ios::sync_with_stdio(false);
    //cin.tie(0);
    //cout.tie(0);
    //scanf("%d",&t);
    //while(t--){
    //scanf("%d",&n);
    n=10;
    for(int i=1;i<=10;i++){
        scanf("%s",str[i]+1);
        for(int j=1;j<=n;j++){
            if(str[i][j]=='C'){
                cx=i;
                cy=j;
            }else if(str[i][j]=='F'){
                fx=i;
                fy=j;
            }
        }
    }
    int x,y;
    while(1){
        if(cx==fx&&cy==fy){
            ans=cnt;
            break;
        }
        if(vis[cx][cy][ct][fx][fy][ft])
            break;
        cnt++;
        //cout<<cnt<<endl;
        vis[cx][cy][ct][fx][fy][ft]=1;
        //cout<<cx<<" "<<cy<<endl;
        x=cx+dir[ct][0];
        y=cy+dir[ct][1];
        if(1<=x&&x<=n&&1<=y&&y<=n&&str[x][y]!='*'){
            cx=x;
            cy=y;
        }else{
            ct++;
            ct%=4;
        }
        //cout<<fx<<" "<<fy<<endl;
        x=fx+dir[ft][0];
        y=fy+dir[ft][1];
        if(1<=x&&x<=n&&1<=y&&y<=n&&str[x][y]!='*'){
            fx=x;
            fy=y;
        }else{
            ft++;
            ft%=4;
        }
    }
    cout<<ans<<endl;
    //}

#ifdef DEBUG
	printf("Time cost : %lf s\n",(double)clock()/CLOCKS_PER_SEC);
#endif
    //cout << "Hello world!" << endl;
    return 0;
}