B

“there will be at most one wolf adjacent to each little pig”

也就是说，对于每头狼，若它周围有猪，就++cnt

点击打开链接

#include<iostream>using namespace std;char a[11][11];int main(){    int n,m;    cin>>n>>m;    for(int i=0;i<n;i++)        cin>>a[i];    int count=0;    for(int i=0;i<n;i++)    {        for(int j=0;j<m;j++)        {            if(a[i][j]=='W' && (a[i-1][j]=='P' || a[i+1][j]=='P' || a[i][j-1]=='P' || a[i][j+1]=='P'))            {                count++;            }        }    }    cout<<count<<endl;}