样例已过

#include<bits/stdc++.h>
using namespace std;
int n,j=1,s[107],f[107][207],zs=0;
char a[107][207],ch;
int x1[5]={0,0,1,0,-1};
int y1[5]={0,1,0,-1,0};
void dfs(int x,int y){
	f[x][y]=1;
	for(int i=1;i<=4;++i){
		if(f[x+y1[i]][y+x1[i]]==0&&'a'<=a[x+y1[i]][y+x1[i]]&&a[x+y1[i]][y+x1[i]]<='z'){
			dfs(x+y1[i],y+x1[i]);
		}
	}
}
int main(){
	cin>>n;
	ch=getchar();
	for(int i=1;i<=n;++i){
		j=1;
		while((ch=getchar())!='\n'){
			a[i][j]=ch;
			s[i]++;
			j++;
		}
	}
	for(int i=1;i<=n;++i){
		for(int k=1;k<=s[i];++k){
			if(f[i][k]==0&&'a'<=a[i][k]&&a[i][k]<='z'){
				zs++;
				dfs(i,k);
			}
			f[i][k]=1; 
		}
	}
	cout<<zs;
	return 0;
}