题解 | #坐标移动#

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

int main(){
    int x = 0, y= 0;
    string in, tmp;
    getline(cin, in);
    vector<string> movements;
    while(in.find(";") != -1)
        in.replace(in.find(";"), 1," ");
    stringstream ss;
    ss << in;
    while(ss>>tmp)
        movements.push_back(tmp);

    //迭代移动动作
    for(auto movement:movements){
        if(movement.size()>3 && movement.size()<2)
            continue;
	  	//这一步有点取巧
        else if(!isupper(movement[0]) || isalpha(movement[2]))
            continue;
        else {
            int m = atoi(movement.substr(1).c_str());
            switch (movement[0]){
                case 'A':x -= m;break;
                case 'D':x += m;break;
                case 'W':y += m;break;
                case 'S':y-= m;break;
                default:
                    continue;
            }
        }
    }
    cout << x<<","<<y<<endl;
    return 0;
}