题解 | #坐标移动#

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    char flag = ' ';
    while(cin>>str)
    {
        int raw=0, col=0;
        int len = str.length();
        int pos = 0;
        int num = 0;
        while(pos<len)
        {
            if(str[pos] == ';')
            {
                pos++;
                continue;
            }
            if(str[pos]=='A'||str[pos]=='S'||str[pos]=='W'||str[pos]=='D')
            {
                flag = str[pos];
                pos++;
                if(isdigit(str[pos]))
                {
                    while(str[pos] != ';')
                    {
                        if(isdigit(str[pos]))
                        {
                            num = num*10+str[pos]-'0';
                            pos++;
                        }
                        else
                        {
                             while(str[pos] != ';')
                             {
                                 pos++;
                             }
                            num = 0;
                            flag = ' ';
                            break;
                        }
                    }
                }
                switch (flag)
                {
                    case 'A':
                        {
                            raw -= num;
                            num = 0;
                            flag = ' ';
                            break;
                        }
                    case 'W':
                        {
                            col += num;
                            num = 0;
                            flag = ' ';
                            break;
                        }
                    case 'S':
                        {
                            col -= num;
                            num = 0;
                            flag = ' ';
                            break;
                        }
                    case 'D':
                        {
                            raw += num;
                            num = 0;
                            flag = ' ';
                            break;
                        }
                    case ' ':
                        break;
                }
            }
            else
            {
                while(str[pos] != ';')
                {
                    pos++;
                }
                num = 0;
                flag = ' ';
            }
            pos++; 
        }
        cout<<raw<<","<<col<<endl;
    }
    return 0;
}