题解

#include<bits/stdc++.h>
using namespace std;
int b,k=0;
char a[666][666];
int main(){
    cin>>b;
    for(int i=1;i<=b;i++){
        for(int j=1;j<=b;j++){
            cin>>a[i][j];
        }
    }for(int i=1;i<=b;i++){
        for(int j=1;j<=b;j++){
            if(a[i][j]=='P'){
                if(a[i-1][j]=='.'){cout<<i-1<<" "<<j<<endl;k=1;}
                if(a[i+1][j]=='.'){cout<<i+1<<" "<<j<<endl;k=1;}
                if(a[i][j-1]=='.'){cout<<i<<" "<<j-1<<endl;k=1;}
                if(a[i][j+1]=='.'){cout<<i<<" "<<j+1<<endl;k=1;}
                if(k==0)cout<<"no path!";
                return 0;
            }
        }
    }
    return 0;
}