Online Judge | Problem Set | Authors | Online Contests | User | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest |
帮忙看看,为什么re?实在不明白了#include <iostream> using namespace std; bool occupancy(int i, int j, int d) { if(d==1) return true; int x,y; x = i; y = j; if (d==2) { if ( (x==0 && y ==1) || (x==1 && y ==0) || (x==1 && y ==2) || (x==2 && y==1) ) return false; else return true; } int len = 1; for(x=2; x<d; x++) len *= 3; if(i < len) x = 0; else if(i < 2*len) x = 1; else x = 2; if(j < len) y = 0; else if(j < 2*len) y = 1; else y = 2; if ( (x==0 && y ==1) || (x==1 && y ==0) || (x==1 && y ==2) || (x==2 && y==1) ) return false; return occupancy(i-x*len, j-y*len, d-1); } int main() { int d, i, j; while(true) { scanf("%d", &d); if(d==0) break; int wid = 1; for(i=1; i<d; i++) wid *= 3; for(i=0; i<wid; i++) { for(j=0; j<wid; j++) { if( occupancy(i ,j , d)) printf("X"); else printf(" "); } printf("\n"); } printf("-\n"); } return 0; } Followed by:
Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator