Description
Input
Output
Sample Input
4 5 1 2 1 4 2 3 2 4 3 4
Sample Output
1 2 3 4 2 1 4 3 2 4 1
Hint
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | #include <vector>#include <list>#include <map>#include <set>#include <deque>#include <queue>#include <stack>#include <bitset>#include <algorithm>#include <functional>#include <numeric>#include <utility>#include <sstream>#include <iostream>#include <iomanip>#include <cstdio>#include <cmath>#include <cstdlib>#include <cctype>#include <string>#include <cstring>#include <cstdio>#include <cmath>#include <cstdlib>#include <ctime>using namespace std;typedef long long LL;#define CLR(x,y) memset((x),(y),sizeof((x)))#define getint(x) int (x);scanf("%d",&(x))#define get2int(x,y) int (x),(y);scanf("%d%d",&(x),&(y))#define get3int(x,y,z) int (x),(y),(z);scanf("%d%d%d",&(x),&(y),&(z))#define getll(x) LL (x);scanf("%I64d",&(x))#define get2ll(x,y) LL (x),(y);scanf("%I64d%I64d",&(x),&(y))#define get3ll(x,y,z) LL (x),(y),(z);scanf("%I64d%I64d%I64d",&(x),&(y),&(z))#define getdb(x) double (x);scanf("%lf",&(x))#define get2db(x,y) double (x),(y);scanf("%lf%lf",&(x),&(y))#define get3db(x,y,z) double (x),(y),(z);scanf("%lf%lf%lf",&(x),&(y),&(z))#define getint2(x) scanf("%d",&(x))#define get2int2(x,y) scanf("%d%d",&(x),&(y))#define get3int2(x,y,z) scanf("%d%d%d",&(x),&(y),&(z))#define getll2(x) scanf("%I64d",&(x))#define get2ll2(x,y) scanf("%I64d%I64d",&(x),&(y))#define get3ll2(x,y,z) scanf("%I64d%I64d%I64d",&(x),&(y),&(z))#define getdb2(x) scanf("%lf",&(x))#define get2db2(x,y) scanf("%lf%lf",&(x),&(y))#define get3db2(x,y,z) scanf("%lf%lf%lf",&(x),&(y),&(z))#define getstr(str) scanf("%s",str)#define get2str(str1,str2) scanf("%s",str1,str2)#define FOR(x,y,z) for(int (x)=(y);(x)<(z);(x)++)#define FORD(x,y,z) for(int (x)=(y);(x)>=(z);(x)--)#define FOR2(x,y,z) for((x)=(y);(x)<(z);(x)++)#define FORD2(x,y,z) for((x)=(y);(x)>=(z);(x)--)const int maxn = 10000 + 100;const int maxm = (50000 + 100)*2;int head[maxn];//head[i]表示第i个顶点，第一个链节的编号int next[maxm];//表示 第 q 号链节，下一个链节的编号int end[maxm];//表示 第 q 个链节 的终点int vis[maxm];//表示第q个链节是否被访问过.void addedge(int from,int to){ static int q = 1; end[q] = to; next[q] = head[from]; head[from] = q++;}int n,m;void dfs(int cur){ for(int q = head[cur];q;q = next[q]) { if(!vis[q]) { vis[q] = 1; dfs(end[q]); } } printf("%d\n",cur);}int main(){ get2int2(n,m); int a,b; //CLR(next,0);CLR(end,0);CLR(head,0);CLR(vis,0); FOR(i,0,m){ get2int2(a,b); addedge(a,b); addedge(b,a); } dfs(1); return 0;} |
[2016-01-27][POJ][2230][Watchcow]
原文：http://www.cnblogs.com/qhy285571052/p/5164724.html