标签：

变形课

so
soon
river
goes
them
got
moon
begin
big
0

Yes.

Hint
Hint
 
Harry 可以念这个咒语:"big-got-them".

#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <queue>
using namespace std;

string str[1100];
bool vis[1100];
int ans, flag;

void dfs(int pos){
    int len = str[pos].length();
    if(str[pos][len - 1] == 'm'){
        flag = 1;
        return ;
    }
    for(int i = 0; i < ans; ++i){
        if(str[pos][len - 1] == str[i][0] && !vis[i]){
            vis[i] = 1;
            dfs(i);
        }
    }
}

int main (){
    string s;
    ans = 0;
    flag = 0;
    while(cin >> s){
        if(s[0] == '0'){
            for(int i = 0; i < ans; ++i)
                if(str[i][0] == 'b')
                    dfs(i);
                if(flag)
                    printf("Yes.\n");
                else
                    printf("No.\n");
                flag = 0;
                ans = 0;
            }
        else {
            str[ans++] = s;
        }
    }
    return 0;
}

HDU 1181--变形课【DFS】

标签：

原文地址：http://blog.csdn.net/hpuhjh/article/details/47279677