poj1064 Color Me Less(枚举)
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Color Me Less
Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 30498 Accepted: 14855
Description
A color reduction is a mapping from a set of discrete colors to a smaller one. The solution to this problem requires that you perform just such a mapping in a standard twenty-four bit RGB color space. The input consists of a target set of sixteen RGB color values, and a collection of arbitrary RGB colors to be mapped to their closest color in the target set. For our purposes, an RGB color is defined as an ordered triple (R,G,B) where each value of the triple is an integer from 0 to 255. The distance between two colors is defined as the Euclidean distance between two three-dimensional points. That is, given two colors (R1,G1,B1) and (R2,G2,B2), their distance D is given by the equation
Input
The input is a list of RGB colors, one color per line, specified as three integers from 0 to 255 delimited by a single space. The first sixteen colors form the target set of colors to which the remaining colors will be mapped. The input is terminated by a line containing three -1 values.
Output
For each color to be mapped, output the color and its nearest color from the target set.
If there are more than one color with the same smallest distance, please output the color given first in the color set.
If there are more than one color with the same smallest distance, please output the color given first in the color set.
Sample Input
0 0 0255 255 2550 0 11 1 1128 0 00 128 0128 128 00 0 128126 168 935 86 34133 41 193128 0 1280 128 128128 128 128255 0 00 1 00 0 0255 255 255253 254 25577 79 13481 218 0-1 -1 -1
Sample Output
(0,0,0) maps to (0,0,0)(255,255,255) maps to (255,255,255)(253,254,255) maps to (255,255,255)(77,79,134) maps to (128,128,128)(81,218,0) maps to (126,168,9)
*********************************************Problem: 1046User: zhangyonghongMemory: 244KTime: 0MSLanguage: CResult: Accepted*******************************************************************题意:先输入16组数据, 表示目标颜色组, 然后在输入多组数据, * 直到输入的三个数都为-1,输入结束。 * * 每输入一组数据,都和上面的16组数据进行比较。 * 根据 * <img src="http://poj.org/images/1046/color.gif" alt="" /> * 找出16个 D 中最小的一个 D ,然后输出 D 最小时对应的目标颜色组。******************************************************************* #include<stdio.h> #include<math.h> #define MAXN 10001 int r[MAXN], g[MAXN], b[MAXN]; int rr, gg, bb; int dist[MAXN]; int main() { int i, pos; while(~scanf("%d%d%d", &r[0], &g[0], &b[0])) { for(i=1; i<16; i++) scanf("%d%d%d", &r[i], &g[i], &b[i]); while(~scanf("%d %d %d", &rr, &gg, &bb)) { int inf = 1<<28; int k =0; if(rr==-1 && gg==-1 && bb==-1) return 0; for(i=0; i<16; i++) dist[i] = sqrt( pow((rr-r[i]), 2) + pow((gg-g[i]), 2) + pow((bb-b[i]), 2)); for(i=0; i<16; i++) { if(inf > dist[i]){ inf = dist[i]; pos = i; } } printf("(%d,%d,%d) maps to (%d,%d,%d)\n", rr, gg, bb, r[pos], g[pos], b[pos]); } } return 0; }
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