Code: Select all
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d e
e f
f d
a b
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0Code: Select all
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a b c d e f g h iMy code gives...5
a s d f
b d f r
c q w e
f s
g h
0
It's wrong...isn't it ??3
d f s
Code: Select all
#include <stdio.h>
#include <iostream>
#include <string>
#include <string.h>
#include <sstream>
#include <map>
#include <vector>
#include <stack>
#include <queue>
#include <algorithm>
using namespace std;
struct node
{
int id,low;
bool operator <(const node &a)const
{
return a.low>low;
}
}asd;
priority_queue <node> pq;
char ss[100];
string s,p,arr[105];
map <string,int> mp;
bool v[105],vv[105],vvv[105];
int adj[105][105],pre[105],post[105],ma,ll,l,dagl,whichdag[105],dagpre[105],dagpost[105],dagadj[105][105],lll;
vector <int> dag[105];
vector <string> ans;
stack <int> x;
void clear()
{
while(!pq.empty())
pq.pop();
mp.clear();
memset(v,0,sizeof(v));
memset(vv,0,sizeof(vv));
memset(vvv,0,sizeof(vvv));
memset(adj,0,sizeof(adj));
memset(dagadj,0,sizeof(adj));
for(int i=0;i<dagl;i++)
dag[i].clear();
ans.clear();
while(!x.empty())
x.pop();
}
void rec(int n)
{
pre[n]=post[n]=ll++;
v[n]=vv[n]=1;
x.push(n);
int a,i;
for(i=0;i<l;i++)
{
if(adj[i][n])
{
if(!v[i])
rec(i);
if(vv[i])
post[n]=post[n]<post[i]?post[n]:post[i];
}
}
if(pre[n]==post[n])
{
while(1)
{
a=x.top();
x.pop();
vv[a]=0;
dag[dagl].push_back(a);
whichdag[a]=dagl;
if(a==n)
break;
}
dagl++;
}
}
void dfs(int n,int s)
{
dagpre[n]=lll++;
v[n]=1;
int i;
for(i=0;i<dagl;i++)
{
if(dagadj[n][i] && !v[i])
dfs(i,s);
}
dagpost[n]=lll++;
if(s)
{
asd.id=n;
asd.low=dagpost[n];
pq.push(asd);
}
}
int main()
{
//freopen("in.txt","r",stdin);
int a,b,c,i,j,k,n,t;
while(1)
{
sscanf(gets(ss),"%d",&n);
if(!n)
break;
l=0;
while(n--)
{
getline(cin,s);
stringstream line(s);
line>>p;
if(mp.find(p)==mp.end())
{
mp[p]=l;
b=l;
arr[l]=p;
l++;
}
else
b=mp[p];
while(line>>p)
{
if(mp.find(p)==mp.end())
{
mp[p]=l;
a=l;
arr[l]=p;
l++;
}
else
a=mp[p];
adj[a][b]=1;
}
}
dagl=ll=0;
for(i=0;i<l;i++)
{
if(!v[i])
rec(i);
}
memset(v,0,sizeof(v));
for(i=0;i<dagl;i++)
{
for(j=0;j<dag[i].size();j++)
{
a=dag[i][j];
for(k=0;k<l;k++)
{
if(adj[a][k] && whichdag[k]!=i)
dagadj[i][whichdag[k]]=1;
}
}
}
lll=0;
for(i=0;i<dagl;i++)
{
if(!v[i])
dfs(i,1);
}
memset(v,0,sizeof(v));
while(!pq.empty())
{
asd=pq.top();
pq.pop();
a=asd.id;
if(!v[a])
{ dfs(a,0);
for(i=0;i<dag[a].size();i++)
ans.push_back(arr[dag[a][i]]);
}
}
sort(ans.begin(),ans.end());
printf("%d\n",ans.size());
for(i=0;i<ans.size();i++)
{
if(i)
printf(" ");
cout<<ans[i];
}
printf("\n");
clear();
}
return 0;
}Code: Select all
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4 a b e fCode: Select all
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0Code: Select all
4
a b e fCode: Select all
13
yzkg vcjqig
wsd w lzjshhp omol
w wsd urhfyb atde lzjshhp unqqc urhfyb
urhfyb wsd vcjqig nupe nupe
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nupe wsd atde
vcjqig unqqc unqqc qyy wsd urhfyb yzkg
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qyy wsd omol atde w
gkh nupe unqqc urhfyb vcjqig lzjshhp atde
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5
apa tvrrct
fir lyaj eaxpf
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16
zerjobh inwppwu njbc
xamjdn idzmr sxdc xxh
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idzmr hb ya zerjobh xamjdn ij xxh sobk g
kwoewkd hb gpp
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g njbc kwoewkd ya njbc ya sobk sxdc inwppwu
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21
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gecbyf n p g ufwczaf ggvz sqrkihw ydenvz snv ajisxdk
sayif ajisxdk gpi gecb[code]Code: Select all
13
atde gkh lzjshhp nupe omol qyy unqqc urhfyb vcjqig w wsd ygjd yzkg
10
aielg euzrg ilnt ldgny lfmlpj q t vzkpwai xacto zxfh
6
bch cm gaxw kx ovxnwit zfpvtiy
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jdqig vl
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apa eaxpf tvrrct
16
g gpp hb idzmr ij inwppwu kwoewkd njbc pe sobk sxdc xamjdn xxh ya z zerjobh
21
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Code: Select all
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0Code: Select all
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Code: Select all
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