UVA-1030-Image Is Everything
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这个题先找出“看穿”的所有方块,拿下来,再不断找每一块在各个视图中颜色不一样的给删掉,直到没有为止,本题难点在于各个视图和小方块的坐标转化,还是看看刘汝佳的代码,太屌了,我用了两种转化,他一种就搞出来了,以下是我的代码:
#include<stdio.h>#include<iostream>using namespace std;void kanchuan(char tu[][15][15],int m,int ti[][15][15],int n){ for(int i = 0;i < n;i++) for(int j = 0;j < n;j++) { if(tu[m][i][j] == '.' && m == 0) for(int k = 0;k < n;k++) ti[j][k][n - i - 1] = 0; if(tu[m][i][j] == '.' && m == 1) for(int k = 0;k < n;k++) ti[k][j][n - i - 1] = 0; if(tu[m][i][j] == '.' && m == 2) for(int k = 0;k < n;k++) ti[n - j - 1][k][n - i - 1] = 0; if(tu[m][i][j] == '.' && m == 3) for(int k = 0;k < n;k++) ti[k][n - j - 1][n - i - 1] = 0; if(tu[m][i][j] == '.' && m == 4) for(int k = 0;k < n;k++) ti[j][i][k] = 0; if(tu[m][i][j] == '.' && m == 5) for(int k = 0;k < n;k++) ti[j][n - i - 1][k] = 0; }}int main(){ int n; while(cin>>n && n) { char tu[6][15][15]; int ti[15][15][15],ans = 0; for(int i = 0; i < n; i++) { scanf("%s",tu[0][i]); scanf("%s",tu[1][i]); scanf("%s",tu[2][i]); scanf("%s",tu[3][i]); scanf("%s",tu[4][i]); scanf("%s",tu[5][i]); } for(int i = 0; i < n; i++) for(int j = 0; j < n; j++) for(int k = 0; k < n; k++) ti[i][j][k] = 1; kanchuan(tu,0,ti,n); //前视图 kanchuan(tu,1,ti,n); //左视图 kanchuan(tu,2,ti,n); //后视图 kanchuan(tu,3,ti,n); //右视图 kanchuan(tu,4,ti,n); //顶视图 kanchuan(tu,5,ti,n); //底视图 while(1) { int flag = 0; //0则正确 for(int i = 0; i < n; i++) //检测某个面是否应该被删除 for(int j = 0; j < n; j++) for(int k = 0; k < n; k++) if(ti[i][j][k]) { char color = '0'; //检测可以对比扫描的面 int up = 1,down = 1,left = 1,right = 1,near = 1,notnear = 1; //1是未被挡住 for(int l = 0; l < i; l++) if(ti[l][j][k]) left = 0; for(int l = i + 1; l < n; l++) if(ti[l][j][k]) right = 0; for(int l = 0; l < j; l++) if(ti[i][l][k]) notnear = 0; for(int l = j + 1; l < n; l++) if(ti[i][l][k]) near = 0; for(int l = 0; l < k; l++) if(ti[i][j][l]) down = 0; for(int l = k + 1; l < n; l++) if(ti[i][j][l]) up = 0; //在各个视图中找到这个小方块,并对比 if(up && color == '0') color = tu[4][j][i]; if(down && color == '0') color = tu[5][n - j - 1][i]; if(left && color == '0') color = tu[1][n - k - 1][j]; if(right && color == '0') color = tu[3][n - k - 1][n - j - 1]; if(near && color == '0') color = tu[0][n - k - 1][i]; if(notnear && color == '0') color = tu[2][n - k - 1][n - i - 1]; if(up && color !=tu[4][j][i]) { flag = 1; ti[i][j][k] = 0; continue; } if(down && color !=tu[5][n - j - 1][i]) { flag = 1; ti[i][j][k] = 0; continue; } if(left && color != tu[1][n - k - 1][j]) { flag = 1; ti[i][j][k] = 0; continue; } if(right && color !=tu[3][n - k - 1][n - j - 1]) { flag = 1; ti[i][j][k] = 0; continue; } if(near && color !=tu[0][n - k - 1][i]) { flag = 1; ti[i][j][k] = 0; continue; } if(notnear && color !=tu[2][n - k - 1][n - i - 1]) { flag = 1; ti[i][j][k] = 0; continue; } } if(!flag) break; } for(int i = 0; i < n; i++) for(int j = 0; j < n; j++) for(int k = 0; k < n; k++) if(ti[i][j][k]) ans++; printf("Maximum weight: %d gram(s)\n",ans); } return 0;}
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