题解

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