注意 因为第三个测试数据6个单词里没有数字 因此结果输出0

#include<bits/stdc++.h>
using namespace std;
map<string,string> p;
string s[7];
string a[7];
long long val;
bool cmp(string a,string b)
{
    return a+b<b+a;
}
int main()
{
    p["one"]="01";     p["two"]="04";      p["three"]="09";    p["four"]="16";    p["five"]="25";
    p["six"]="36";     p["seven"]="49";    p["eight"]="64";    p["nine"]="81";    p["ten"]="00";
    p["eleven"]="21";  p["twelve"]="44";   p["thirteen"]="69"; p["fourteen"]="96";p["fifteen"]="25"; 
    p["sixteen"]="56"; p["seventeen"]="89";p["eighteen"]="24"; p["nineteen"]="61";p["twenty"]="00";
    p["a"]="01";       p["both"]="04";     p["another"]="01";  p["first"]="01";   p["second"]="04";
    p["third"]="09";
    for(int i=1;i<=6;i++)
    {
        cin>>s[i];
        transform(s[i].begin(),s[i].end(),s[i].begin(),::tolower);
        //cout<<s[i]<<endl;
    }
    int k=0;
    for(int i=1;i<=6;i++)
    {
        if(p.count(s[i])) 
        {
            //cout<<s[i]<<endl;
            k++;
            a[k]=p[s[i]]; 
            //cout<<a[k]<<"* "<<k<<endl;
        }
    }
    if(k==0) {cout<<0<<endl;return 0;}
    sort(a+1,a+k,cmp);
    stringstream stream;
    for(int i=1;i<=k;i++) stream<<a[i];
    stream>>val;
    cout<<val;
    return 0;
}