UVA 253 Cube painting（思维题）

题意：略

解题思路：所有可能全部枚举， 我估计我是解这个题，方法最笨，代码量最长的人，就别参考了，尽情的笑话我吧。

最下面有神方法， 枚举三次此面，和对立面即可。代码简单易懂。

Description

We have a machine for painting cubes. It is supplied with three different colors: blue, red and green. Each face of the cube gets one of these colors. The cube's faces are numbered as in Figure 1.

Figure 1.

Since a cube has 6 faces, our machine can paint a face-numbered cube in  different ways. When ignoring the face-numbers, the number of different paintings is much less, because a cube can be rotated. See example below. We denote a painted cube by a string of 6 characters, where each character is a b, r, or g. The  character (  ) from the left gives the color of face i. For example, Figure 2 is a picture of rbgggr and Figure 3 corresponds to rggbgr. Notice that both cubes are painted in the same way: by rotating it around the vertical axis by 90  , the one changes into the other.

Input

The input of your program is a textfile that ends with the standard end-of-file marker. Each line is a string of 12 characters. The first 6 characters of this string are the representation of a painted cube, the remaining 6 characters give you the representation of another cube. Your program determines whether these two cubes are painted in the same way, that is, whether by any combination of rotations one can be turned into the other. (Reflections are not allowed.)

Output

The output is a file of boolean. For each line of input, output contains TRUE if the second half can be obtained from the first half by rotation as describes above, FALSE otherwise.

Sample Input

rbgggrrggbgrrrrbbbrrbbbrrbgrbgrrrrrg

Sample Output

TRUEFALSEFALSE

Memory: 0 KB Time: 0 MSLanguage: C++ 4.8.2 Result: Accepted

#include<algorithm>#include<cstdio>#include<cstdlib>#include<cstring>#include<cmath>#include<cctype>#include<list>#include<iostream>#include<map>#include<queue>#include<set>#include<stack>#include<vector>using namespace std;#define MAX_N 20const int INF = 0x3f3f3f3f;char s[MAX_N], str1[MAX_N], str2[MAX_N], s1[MAX_N], s2[MAX_N];void separate(){    for(int i = 0 ; i < 6 ; i++)    {        s1[i] = s[i];        s2[i] = s[i + 6];    }}bool change_right(char str1[], char str2[]){    char tmp = str2[3];    str2[3] = str2[1];    str2[1] = str2[2];    str2[2] = str2[4];    str2[4] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_left(char str1[], char str2[]){    char tmp = str2[2];    str2[2] = str2[1];    str2[1] = str2[3];    str2[3] = str2[4];    str2[4] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_up(char str1[], char str2[]){    char tmp = str2[0];    str2[0] = str2[1];    str2[1] = str2[5];    str2[5] = str2[4];    str2[4] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_down(char str1[], char str2[]){    char tmp = str2[5];    str2[5] = str2[1];    str2[1] = str2[0];    str2[0] = str2[4];    str2[4] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_top_left(char str1[], char str2[]){    char tmp = str2[2];    str2[2] = str2[0];    str2[0] = str2[3];    str2[3] = str2[5];    str2[5] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_top_right(char str1[], char str2[]){    char tmp = str2[3];    str2[3] = str2[0];    str2[0] = str2[2];    str2[2] = str2[5];    str2[5] = tmp;    if(strcmp(str1, str2)) return false;    else return true;}bool change_front(char str1[], char str2[]){    char tmp1 = str2[4];    str2[4] = str2[1];    str2[1] = tmp1;    char tmp2 = str2[2];    str2[2] = str2[3];    str2[3] = tmp2;    if(strcmp(str1, str2)) return false;    else return true;}bool change_top(char str1[], char str2[]){    char tmp1 = str2[5];    str2[5] = str2[0];    str2[0] = tmp1;    char tmp2 = str2[4];    str2[4] = str2[1];    str2[1] = tmp2;    if(strcmp(str1, str2)) return false;    else return true;}int main(){//    freopen("253.txt", "w", stdout);//    freopen("out.txt", "r", stdin);    while(scanf("%s", s) != EOF)    {        separate();        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2))//1        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2))//1        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2))//1        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2))//2        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2))//3        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2))//4        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2))//5        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2))//6        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2)|| change_left(str1, str2))//7        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_up(str1, str2))//8        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2)|| change_right(str1, str2))//9        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_up(str1, str2))//10        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2)|| change_right(str1, str2))//11        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_down(str1, str2))//12        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2)|| change_left(str1, str2))//13        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_down(str1, str2))//14        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_left(str1, str2))//15        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_top_left(str1, str2))//16        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_right(str1, str2))//17        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_top_left(str1, str2))//18        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_up(str1, str2))//19        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2)|| change_top_right(str1, str2))//20        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_down(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2)|| change_top_right(str1, str2))//22        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2)|| change_top_left(str1, str2))        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_up(str1, str2))        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_down(str1, str2))        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2)|| change_top_left(str1, str2))        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_left(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_top_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_top_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2)|| change_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_top(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_top(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2)|| change_left(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_left(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_left(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_right(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_top(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2)|| change_top_left(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_top(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top(str1, str2)|| change_top_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_top(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_top_right(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_right(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_top_left(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_top_left(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_up(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_up(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_down(str1, str2)|| change_front(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        strcpy(str1, s1);        strcpy(str2, s2);        if(change_front(str1, str2)|| change_down(str1, str2))//21        {            cout<<"TRUE"<<endl;            continue;        }        cout<<"FALSE"<<endl;    }    return 0;}

Memory: 0 KB Time: 0 MSLanguage: C++ 4.8.2 Result: Accepted

#include<algorithm>#include<cstdio>#include<cstdlib>#include<cstring>#include<cmath>#include<cctype>#include<list>#include<iostream>#include<map>#include<queue>#include<set>#include<stack>#include<vector>using namespace std;/**************************************************************/#define MAX_N 20const int INF = 0x3f3f3f3f;char s[MAX_N], s1[MAX_N], s2[MAX_N];void separate(){    for(int i = 0 ; i < 6 ; i++)    {        s1[i] = s[i];        s2[i] = s[i + 6];    }}int main(){    while(~scanf("%s", s))    {        separate();        int ans = 1;        for(int i = 0 ; i < 3 ; i++)        {            int flag = 0;            for(int j = 0 ; j < 6 ; j++)            {                if(s1[i] == s2[j] && s1[5 - i] == s2[5 - j])                {                    flag = 1;                    s2[j] = 'o';                    s2[5 - j] = 'o';                    break;                }            }            if(!flag)            {                ans = 0;                break;            }        }        if(ans) cout<<"TRUE"<<endl;        else cout<<"FALSE"<<endl;    }    return 0;}