题目不难，逆时针的时候注意，wa了好多次
wa的代码，错误
1 #include <cstdio> 2 #include <cstring> 3 using namespace std; 4 struct Point{ 5 int x;int y; 6 }p[3]; 7 int main() 8 { 9 char c[205]; 10 while(~scanf("%s",c)){ 11 printf("300 420 moveto 310 420 lineto "); 12 13 p[0].x=300;p[0].y=420;p[1].x=310;p[1].y=420; 14 for(int i=0;i<strlen(c);i++){ 15 if(c[i]=='A'){ 16 if(p[i%3].x==p[i%3+1].x){ 17 p[i%3+2].y=p[i%3+1].y; 18 p[i%3+2].x=p[i%3+1].x+p[i%3+1].y-p[i%3].y; 19 } 20 else{ 21 p[i%3+2].x=p[i%3+1].x; 22 p[i%3+2].y=p[i%3+1].y-p[i%3+1].x+p[i%3].x; 23 } 24 } 25 else if(c[i]=='V'){ 26 if(p[i%3].x==p[i%3+1].x){ 27 p[i%3+2].y=p[i%3+1].y; 28 p[i%3+2].x=p[i%3+1].x-p[i%3+1].y+p[i%3].y; 29 } 30 else{ 31 p[i%3+2].x=p[i%3+1].x; 32 p[i%3+2].y=p[i%3+1].y+p[i%3+1].x-p[i%3].x; 33 } 34 } 35 printf("%d %d lineto ",p[i%3+2].x,p[i%3+2].y); 36 } 37 38 printf("stroke showpage "); 39 } 40 41 return 0; 42 }
附ac代码
1 #include <cstdio> 2 #include <cstring> 3 using namespace std; 4 5 int main() 6 { 7 char c[205]; 8 while(~scanf("%s",c)){ 9 printf("300 420 moveto 310 420 lineto "); 10 int x=310,y=420,len=0; 11 for(int i=0;i<strlen(c);i++){ 12 13 if(c[i]=='V'){ 14 15 switch(len){ 16 case 0:y+=10;break; 17 case 1:x+=10;break; 18 case 2:y-=10;break; 19 case 3:x-=10;break; 20 } 21 len=(len+3)%4;// 22 } 23 else if(c[i]=='A'){ 24 switch(len){ 25 case 2:y+=10;break; 26 case 1:x-=10;break; 27 case 0:y-=10;break; 28 case 3:x+=10;break; 29 } 30 len=(len+1)%4; 31 } 32 printf("%d %d lineto ",x,y); 33 } 34 35 printf("stroke showpage "); 36 } 37 38 return 0; 39 }