Edge 
总提交: 1 测试通过: 0
描述
For
products that are wrapped in small packings it is necessary that the
sheet of paper containing the directions for use is folded until its
size becomes small enough. We assume that a sheet of paper is
rectangular and only folded along lines parallel to its initially
shorter edge. The act of folding along such a line, however, can be
performed in two directions: either the surface on the top of the sheet
is brought together, or the surface on its bottom. In both cases the two
parts of the rectangle that are separated by the folding line are laid
together neatly and we ignore any differences in thickness of the
resulting folded sheet.
After several such folding steps have
been performed we may unfold the sheet again and take a look at its
longer edge holding the sheet so that it appears as a one-dimensional
curve, actually a concatenation of line segments. If we move along this
curve in a fixed direction we can classify every place where the sheet
was folded as either type A meaning a clockwise turn or type V meaning a
counter-clockwise turn. Given such a sequence of classifications,
produce a drawing of the longer edge of the sheet assuming 90 degree
turns at equidistant places.
输入
The input contains several test cases, each on a separate line. Each line contains a nonempty string of characters A and V describing the longer edge of the sheet. You may assume that the length of the string is less than 200. The input file terminates immediately after the last test case.
输出
For
each test case generate a PostScript drawing of the edge with commands
placed on separate lines. Start every drawing at the coordinates
(300,420) with the command "300 420 moveto". The first turn occurs at
(310,420) using the command "310 420 lineto". Continue with clockwise or
counter-clockwise turns according to the input string, using a sequence
of "x y lineto" commands with the appropriate coordinates. The turning
points are separated at a distance of 10 units. Do not forget the end
point of the edge and finish each test case by the commands stroke and
showpage.
You may display such drawings with the gv PostScript interpreter, optionally after a conversion using the ps2ps utility.
样例输入
V
AVV
样例输出
300 420 moveto
310 420 lineto
310 430 lineto
stroke
showpage
300 420 moveto
310 420 lineto
310 410 lineto
320 410 lineto
320 420 lineto
stroke
showpage
提示
For the Sample Input:
题目来源
题目上传者
1 #include <iostream> 2 #include <string> 3 #include <cstdio> 4 #include <cmath> 5 #include <cstring> 6 #include <algorithm> 7 #include <map> 8 #include <vector> 9 #include <set> 10 #include <queue> 11 #include <stack> 12 #define LL long long 13 #define MAXI 2147483647 14 #define MAXL 9223372036854775807 15 #define eps (1e-8) 16 #define dg(i) cout << "*" << i << endl; 17 18 using namespace std; 19 20 int main() 21 { 22 char str[205]; 23 int x, y; 24 int tag; 25 //记录最近一次的改变: 26 // x - 10 x + 10 y - 10 y + 10 27 // -1 1 -2 2 28 while(scanf("%s", str) != EOF) 29 { 30 x = 300; y = 420; 31 puts("300 420 moveto"); 32 for(int i = 0; str[i] != '\0'; ++i) 33 { 34 if(str[i] == 'V') 35 { 36 if(i) 37 { 38 if(tag == -2) x += 10, tag = 1; 39 else if(tag == -1) y -= 10, tag = -2; 40 else if(tag == 1) y += 10, tag = 2; 41 else x -= 10, tag = -1; 42 printf("%d %d lineto\n", x, y); 43 } 44 else 45 { 46 x += 10; 47 printf("%d %d lineto\n", x, y); 48 y += 10; 49 tag = 2; 50 printf("%d %d lineto\n", x, y); 51 } 52 } 53 else 54 { 55 if(i) 56 { 57 if(tag == -2) x -= 10, tag = -1; 58 else if(tag == -1) y += 10, tag = 2; 59 else if(tag == 1) y -= 10, tag = -2; 60 else x += 10, tag = 1; 61 printf("%d %d lineto\n", x, y); 62 } 63 else 64 { 65 x += 10; 66 printf("%d %d lineto\n", x, y); 67 y -= 10; 68 tag = -2; 69 printf("%d %d lineto\n", x, y); 70 } 71 } 72 } 73 puts("stroke"); 74 puts("showpage"); 75 } 76 return 0; 77 }