mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
64 lines
938 B
C++
64 lines
938 B
C++
#include<cstdio>
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#include<cstring>
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#include<iostream>
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#include<algorithm>
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#include<queue>
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using namespace std;
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const int maxn=60000;
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int n,use[maxn];
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struct Node
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{
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int l;
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int r;
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int pos;
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bool operator <(const Node &a)const
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{
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if(r==a.r)
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return l>a.l;
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return r>a.r;
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}
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}a[maxn];
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priority_queue<Node> q;
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bool cmp(Node a,Node b)
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{
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if(a.l==b.l)
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return a.r<b.r;
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return a.l<b.l;
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}
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int main()
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{
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while(scanf("%d",&n)!=EOF)
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{
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for(int i=0;i<n;i++)
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{
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scanf("%d%d",&a[i].l,&a[i].r);
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a[i].pos=i;
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}
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sort(a,a+n,cmp);
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q.push(a[0]);
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int now=0,ans=1;
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use[a[0].pos]=1;
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for(int i=1;i<n;i++)
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{
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if(!q.empty()&&q.top().r<a[i].l)
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{
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use[a[i].pos]=use[q.top().pos];
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q.pop();
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}
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else
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{
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ans++;
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use[a[i].pos]=ans;
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}
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q.push(a[i]);
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}
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printf("%d\n",ans);
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for(int i=0;i<n;i++)
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printf("%d\n",use[i]);
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while(!q.empty())
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q.pop();
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}
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return 0;
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}
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