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#include<cstdio>
#include<utility>
#include<vector>
#include<algorithm>
#include<iostream>
#include<set>
#include<cstdlib>
#define low(x) (x&(-x))
using namespace std;
typedef pair<int,int> pi;
const int maxs=2000000,maxn=100000;
int n;
pi C[maxs+100];
pi A[maxn];
inline void Renew(pi&x,pi c)
{
if(x.first>c.first) return;
if(x.first<c.first) {x=c;return;}
if(x.second>c.second) x=c;
}
void change(int l,pi d)
{
for(;l<=maxs;l+=low(l))
Renew(C[l],d);
}
pi Max(int l)
{
pi ans=pi(0,0);
for(;l>0;l-=low(l))
Renew(ans,C[l]);
return ans;
}
inline bool cmp(const pi&x,const pi&y)
{return x.first+x.second<y.first+y.second;}
int main()
{
cin>>n;
for(int i=1;i<=maxs;i++)
C[i].second=i,C[i].first=0;
for(int i=0;i<n;i++)
cin>>A[i].first>>A[i].second;
sort(A,A+n,cmp);pi get;int pos;int ans=0;
for(int i=0;i<n;i++)
{
get=Max(A[i].second);
pos=get.second+A[i].first;ans=max(ans,get.first+1);
change(pos,pi(get.first+1,pos));
}
cout<<ans<<endl;
} <\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f88\u7ecf\u5178\u7684\u9898\u76ee\u4e86\u3002\u3002\u4e00\u5806\u4eba\u3002\u3002\u6709\u91cd\u91cf\u548c\u529b\u91cf\u4e4b\u4e24\u4e2a\u5c5e\u6027\u3002\u3002\u8981\u5806\u4e2a\u5854\uff0c\u4e00\u4e2a\u4eba\u5934\u4e0a\u7684\u6240\u6709\u4eba\u91cd\u91cf\u4e4b\u548c\u4e0d\u5927\u4e8e\u5176\u529b\u91cf\u3002\u3002\u6c42\u5854\u6700\u591a\u80fd\u6709\u51e0\u4e2a\u4eba\u3002\u3002\u5f88\u660e\u663e\u5c06\u4eba\u6309\u91cd\u91cf+\u529b\u91cf\u6392\u5e8f\u3002\u3002\u5c31\u53ef\u4ee5\u6ee1\u8db3\u65e0\u540e\u6548\u6027\u3002\u3002\u90a3\u4e48\u7528\u6811\u72b6\u6570\u7ec4\u7ef4\u62a4\u4e00\u4e0bDP\u7684\u7b54\u6848\u5c31OK\u4e86\u3002\u3002#include<cstdio>#include<utility>#include<vector>#include<algorithm>#include<iostream>#include<set>#include<cstdlib>#define low(x) (x&(-x))using namespace std;typedef pair<int,int> pi;const int maxs=2000000,maxn=100000;int n;pi C[maxs+100];pi A[maxn];inline void Renew(pi&x,pi c){ if(x.first>c.first) return; if(x.first<c.first) {x=c;return;} if(x.second>c.second) x=c;}void change(int l,pi d){ for(;l<=maxs;l+=low(l)) Renew(C[l],d);}pi Max(int l){ pi ans=pi(0,0); for(;l>0;l-=low(l)) Renew(ans,C[l]); return ans; }inline bool cmp(const pi&x,const pi&y){return x.first+x.second<y.first+y.second;}int main(){ cin>>n; for(int i=1;i<=maxs;i++) C[i].second=i,C[i].first=0; for(int i=0;i<n;i++) cin>>A[i].first>>A[i].second; sort(A,A+n,cmp);pi get;int pos;int ans=0; for(int i=0;i<n;i++) { […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/53"}],"collection":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=53"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/53\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=53"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=53"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=53"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}