【习题 4-6 UVA - 508】Morse Mismatches
【链接】 我是链接,点我呀:)
【题意】
如果一直删除。一直增加也找不到。
那么输出所有单词里面字典序最小的哪个。
【题解】
模拟就好。 先对字典排个序再模拟。【代码】
#include <bits/stdc++.h>
#define rep1(i,a,b) for (int i = a;i <= b;i++)
#define rep2(i,a,b) for (int i = a;i >= b;i--)
using namespace std;
const int N = 1e3;
int n;
string s;
string dic[300];
vector<pair<string,string> > v;
string _find(string s){
int step = 0;string ans = "";
rep1(i,0,(int)v.size()-1){
if (v[i].second==s) {
if (step==0) ans = v[i].first;
step++;
}
}
if (step>0){
if (step>1) ans+="!";
return ans;
}
step = -1;
int len1 = s.size();
rep1(i,0,(int)v.size()-1){
int len2 = v[i].second.size();
if (len2<len1){
string temp = s.substr(0,len2);
if (temp==v[i].second){
if (step==-1){
step = len1-len2;
ans = v[i].first;
}else if (len1-len2<step){
step = len1-len2;
ans = v[i].first;
}
}
}else{
//len2>=len1
string temp = v[i].second.substr(0,len1);
if (temp==s){
if (step==-1){
step = len2-len1;
ans = v[i].first;
}else if (len2-len1<step){
step = len2-len1;
ans = v[i].first;
}
}
}
}
if (step==-1) ans = v[0].first;
ans+="?";
return ans;
}
int main(){
//freopen("/home/ccy/rush.txt","r",stdin);
// freopen("/home/ccy/rush_out.txt","w",stdout);
ios::sync_with_stdio(0),cin.tie(0);
while (cin >> s){
if (s[0]=='*') break;
string cor;
cin >> cor;
dic[s[0]] = cor;
}
while (cin >> s){
if (s[0]=='*') break;
string temp = "";
rep1(i,0,(int)s.size()-1){
temp += dic[s[i]];
}
v.push_back({s,temp});
}
sort(v.begin(),v.end());
while (cin >> s){
if (s[0]=='*') break;
cout<<_find(s)<<endl;
}
return 0;
}