hdu 5195 线段树

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" 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" alt="" />

线段树还是比较薄弱,搞了好长时间,还可以用优先队列做
O((n+m)logn
 #include<cstdio>
#include<iostream>
#include<algorithm>
#include<cstring>
#include<cmath>
#include<queue>
using namespace std;
#define for0n for(i=0;i<n;i++)
#define for1n for(i=1;i<=n;i++)
#define w12 while(scanf("%d%d",&n,&m)!=EOF)
#define cl(a) memset(a,0,sizeof(a))
int n,m,t,Min;
#define lson l,mid,rt<<1
#define rson mid+1,r,rt<<1|1
#define root 1,n,1
#define mid ((l+r)>>1)
const int MAXN=;
const int INF = 0x3f3f3f3f;
int head[MAXN],minn[MAXN<<],in[MAXN];
void pushup(int rt){
minn[rt]=min(minn[rt<<],minn[rt<<|]);
}
void build(int l,int r,int rt){
if(l==r){
minn[rt]=in[l];
return;
}
build(lson);
build(rson);
pushup(rt);
}
int query(int k,int l,int r,int rt) {
if(minn[rt]>k) return -;
if (l==r)
{
return l;
}
if(minn[rt<<|]<=k) return query(k,rson);
if(minn[rt<<]<=k) return query(k,lson);
}
void update(int pos,int val,int l,int r,int rt)
{
if(l==r) minn[rt]=val;
else
{
if(pos<=mid) update(pos,val,lson);
else update(pos,val,rson);
pushup(rt);
}
}
struct Edge
{
int to,next;
}edge[MAXN];
int tot=;
void init()
{
tot=;
memset(head,-,sizeof(head));
cl(in);
}
void addedge(int u,int v)
{
edge[tot].to=v;
edge[tot].next=head[u];
head[u]=tot++;
}
int main()
{
int i,j,k;
#ifndef ONLINE_JUDGE
freopen("1.in","r",stdin);
#endif
while(scanf("%d%d%d",&n,&m,&k)!=EOF)
{
init();
while(m--)
{
int u,v;
scanf("%d%d",&u,&v);
addedge(u,v);
in[v]++;
}
build(root);
for1n
{
int id=query(k,root); //得到小于k的最大编号的结点
k-=in[id];
in[id]=INF;
update(id,INF,root);
for(j=head[id];j!=-;j=edge[j].next)
{
int v=edge[j].to;
in[v]--;
update(v,in[v],root);
}
printf("%d",id);
if(i<n)printf(" ");
else printf("\n");
}
}
}

2015-07-23:优先队列

 #include<cstdio>
#include<iostream>
#include<algorithm>
#include<cstring>
#include<cmath>
#include<queue>
#include<map>
using namespace std;
#define MOD 1000000007
const int INF=0x3f3f3f3f;
const double eps=1e-;
typedef long long ll;
#define cl(a) memset(a,0,sizeof(a))
#define ts printf("*****\n");
const int MAXN=;
int n,m,tt;
priority_queue<int> q;
vector<int> vc[MAXN];
int in[MAXN];
int head[MAXN];
struct Edge
{
int to,next;
}edge[MAXN];
int tot=;
void init()
{
tot=;
memset(head,-,sizeof(head));
cl(in);
}
void addedge(int u,int v)
{
edge[tot].to=v;
edge[tot].next=head[u];
head[u]=tot++;
}
bool vis[MAXN];
int main()
{
int i,j,k;
#ifndef ONLINE_JUDGE
freopen("1.in","r",stdin);
#endif
while(~scanf("%d%d%d",&n,&m,&k))
{
init();
cl(in);
cl(vis);
bool flag=;
int u,v;
for(i=;i<=n;i++)
{
vc[i].clear();
}
for(i=;i<m;i++)
{
scanf("%d%d",&u,&v);
addedge(u,v);
in[v]++;
vc[u].push_back(v);
}
for(i=;i<=n;i++)
{
if(in[i]<=k)
{
q.push(i);
vis[i]=;
}
}
while(!q.empty())
{
int now=q.top();
q.pop();
if(k<in[now])
{
vis[now]=;
continue;
}
k-=in[now];
for(i=;i<vc[now].size();i++)
{
int x=vc[now][i];
in[x]--;
if(!vis[x]&&in[x]<=k)
{
vis[x]=;
q.push(x);
}
}
if(!flag)
{
printf("%d",now);
flag=;
}
else
printf(" %d",now);
}
printf("\n");
}
}
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