题解 | #坐标移动#

#include<iostream>
#include<string>
#include<vector>
using namespace std;
void getCoordinate(vector<int>& start, const string& str);
int main(){
    string str;
    while(cin >> str){
        vector<int> beg(2, 0);
        getCoordinate(beg, str);
        cout << beg[0] << "," << beg[1] << endl;
    }

    return 0;
}

void getCoordinate(vector<int>& start, const string& str){
    int i = 0;
    int distance = 0;
    char ch;
    int count = 0;
    while(i < str.size()){
        if(str[i] == ';' && distance != 0 && count == 1){
            if(ch == 'A'){  //左
                start[0] -= distance;
            }else if(ch == 'D'){ //右
                start[0] += distance;
            }else if(ch == 'W'){//上
                start[1] += distance;
            }else if(ch == 'S'){//下
                start[1] -= distance;
            }
            distance = 0;
            count = 0;
        }else if(isalpha(str[i])){
            ch = str[i];
            count++;
        }else if(isdigit(str[i])){
            distance = distance * 10 + (str[i] - '0');
        }else if(str[i] == ';' && count != 0){
            count = 0;
            distance = 0;
        }
        i++;
    }
}