Surf Gym

//如果不慌应该比赛是能想出来的
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <set>
#include <queue>
#include <cstring>
#include <string>
#include <limits.h>
#include <string.h>
#include <vector>
#include <map>
#define LL long long
#define INF 2100000000
#define fi first
#define se second
#define lowbit(x) (x&(-x))
#define eps 5e-7
using namespace std;
const int maxn=(int)3e5 +10;
const int maxm=(int)2510;
const LL MOD=(LL)1e9+7;
int n;
struct nod{
    int x,y;LL z;
    void in(){
        scanf("%d%I64d%d",&x,&z,&y);y+=x;
    }
    nod(){}
    nod(int x,int y,LL z):x(x),y(y),z(z){}
    bool operator <(const nod&a)const{
        return y==a.y&&x<a.x||y<a.y;
    }
};
nod f[maxn];
int main()
{
#ifdef shuaishuai
    freopen("C:\Users\hasee\Desktop\a.txt","r",stdin);
    //freopen("C:\Users\hasee\Desktop\b.txt","w",stdout);
#endif
    int n;
    scanf("%d",&n);
    for(int i=0;i<n;i++ ){
        f[i].in();
    }
    sort(f,f+n) ;
    for(int i=1;i<n;i++){
        if(f[i].x>=f[i-1].y)
            f[i].z+=f[i-1].z;
        else{
            int k=upper_bound(f,f+i,nod(f[i].x,f[i].x,0))-f-1;
            f[i].z=max(f[i-1].z,f[k].z+f[i].z);
        }
    }
    printf("%I64d
",f[n-1].z);
    return 0;
}

//优秀的标程啊 不过我留了个bug在里面 =。=
int n;
struct nod{
    int t;
    LL s;
    int idx;
    nod(){}
    nod(int t,LL s,int idx):t(t),s(s),idx(idx){}
    bool operator <(const nod&a)const {return t<a.t;}
};
vector<nod> q;
LL st[maxn];
int main()
{
#ifdef shuaishuai
    freopen("C:\Users\hasee\Desktop\a.txt","r",stdin);
    //freopen("C:\Users\hasee\Desktop\b.txt","w",stdout);
#endif
    int x,y;LL s;
    scanf("%d",&n);
    q.reserve(2*n);
    for(int i=0;i<n;i++){
        scanf("%d%I64d%d",&x,&s,&y);
        q.push_back(nod(x,0,i));q.push_back(nod(x+y,s,i));
    }
    sort(q.begin(),q.end());
    LL val=0;
    for(int i=0;i<q.size();i++){
        if(q[i].s==0)
            st[q[i].idx]=val;
        else{
            val=max(val,st[q[i].idx]+q[i].s);
        }
       // for(int i=0;i<n;i++)printf("%lld ",st[i]);printf("
");
    }
    printf("%I64d
",val);
    return 0;
}