poj 2556 Edge

#include<cstdio>#include<cstring>using namespace std;int dr[][2]={10,0,0,-10,-10,0,0,10};int main(){    char s[250];    while(gets(s))    {        int x=310,y=420,d=0;        printf("300 420 moveton310 420 lineton");        for(int i=0;s[i]!='';i++)        { if(s[i]=='A')     d=(d+1)%4; else     d=(d+3)%4; x+=dr[d][0]; y+=dr[d][1]; printf("%d %d lineton",x,y);        }        printf("strokenshowpagen");    }    return 0;}