题解 | #坐标移动#

#include<stdio.h>
#include<string.h>
int main(){
    char str[20000]={0};
    int x=0,y=0,num;
    gets(str);
    int l=strlen(str);
    for(int i=0;i<l;i++){
        if(str[i]==';'&&(str[i-4]==';'||str[i-4]==NULL)){
            if(str[i-2]>='0'&&str[i-2]<='9'&&str[i-1]>='0'&&str[i-1]<='9'){
                num = (str[i-2]-48)*10+str[i-1]-48;
            if(str[i-3]=='A')
                x-=num;
            else if(str[i-3]=='D')
                x+=num;
            else if(str[i-3]=='W')
                y+=num;
            else if(str[i-3]=='S')
                y-=num;
            }
        }
        if(str[i]==';'&&(str[i-3]==';'||str[i-3]==NULL)){
            if(str[i-1]>='0'&&str[i-1]<='9'){
                num = str[i-1]-48;
                if(str[i-2]=='A')
                x-=num;
            else if(str[i-2]=='D')
                x+=num;
            else if(str[i-2]=='W')
                y+=num;
            else if(str[i-2]=='S')
                y-=num;
            }
        }
    }
    printf("%d,%d",x,y);
}