题解在此

#include <iostream>
using namespace std;
int main(){
    string s;
    int sum=0,ans=0;
    while (cin>>s){
        if (s=="negative"){
            cout<<'-';
        }else if (s=="one"){
            sum+=1;
        }else if (s=="two"){
            sum+=2;
        }else if (s=="three"){
            sum+=3;
        }else if (s=="four"){
            sum+=4;
        }else if (s=="five"){
            sum+=5;
        }else if (s=="six"){
            sum+=6;
        }else if (s=="seven"){
            sum+=7;
        }else if (s=="eight"){
            sum+=8;
        }else if (s=="nine"){
            sum+=9;
        }else if (s=="ten"){
            sum+=10;
        }else if (s=="eleven"){
            sum+=11;
        }else if (s=="twelve"){
            sum+=12;
        }else if (s=="thirteen"){
            sum+=13;
        }else if (s=="fourteen"){
            sum+=14;
        }else if (s=="fifteen"){
            sum+=15;
        }else if (s=="sixteen"){
            sum+=16;
        }else if (s=="seventeen"){
            sum+=17;
        }else if (s=="eighteen"){
            sum+=18;
        }else if (s=="nineteen"){
            sum+=19;
        }else if (s=="twenty"){
            sum+=20;
        }else if (s=="thirty"){
            sum+=30;
        }else if (s=="forty"){
            sum+=40;
        }else if (s=="fifty"){
            sum+=50;
        }else if (s=="sixty"){
            sum+=60;
        }else if (s=="seventy"){
            sum+=70;
        }else if (s=="eighty"){
            sum+=80;
        }else if (s=="ninety"){
            sum+=90;
        }else if (s=="hundred"){
            sum*=100;
        }else if (s=="thousand"){
            ans+=sum*1000;
            sum=0;
        }else if (s=="million"){
            ans+=sum*1000000;
            sum=0;
        }
    }
    cout<<ans+sum;
    return 0;
}