题解 | 坐标移动

#include <iostream>
#include<vector>
#include<string>
using namespace std;

int main() {
    
    string line;
    while (getline(cin,line)) { // 注意 while 处理多个 case
        int a=0, b=0;
        vector<string>cor;string temp;
        for(char c:line)
        {
            if(c!=';')
            temp+=c;
            else
             {
                if(!temp.empty()&&1<temp.size()&&temp.size()<=3)
                cor.emplace_back(temp);
                temp="";
             }
        }
        for(string m:cor)
        {char i=m[0];
       string j=m.substr(1);
       if(j[0]<'0'||j[0]>'9')
       continue;
       if(j.size()==2&&(j[1]<'0'||j[1]>'9'))
       continue;
       int step=stoi(j);
       if(i=='A')
       a-=step;
       else if(i=='D')
       a+=step;
       else if(i=='W')
       b+=step;
       else if(i=='S')
       b-=step;
        }
        cout << a <<"," <<b << endl;
    }
    return 0;
}
// 64 位输出请用 printf("%lld")