bdfz_2024_summer/day10/U88589/U88589.cpp

/*
[set容器]
- `1 x`: 插入一个值为 $x$ 的数；

- `2 x`: 删除一个值为 $x$ 的数，保证存在，若有多个只删除 $1$ 个；

- `3 l r`: 询问所有满足 $l\le x\le r$ 的 $x$ 的和；[排序]

- `4 x`: 询问集合中 <= x 的最大数，若没有输出 `-1`；

- `5 x`: 询问集合中 >= x 的最小数，若没有输出 `-1`；

1 2 

*/

#include<bits/stdc++.h>
using namespace std;
#define int long long

const int MAX_X=1e5+5;
int q;
vector<int>v(MAX_X);
set<int> s;
int getint();

signed main(signed argc,char *argv[]){
    #ifdef OITEST
        cout<<"TESTING"<<endl;
        #define AS(c){if(!(c)){cerr<<"assert failed:"<<#c<<endl;return -1;}}
        #define ASM(a,b){if((a)!=(b)){cerr<<"assert failed: "<<a<<endl<<b<<endl;return 1;}}
        AS(argc==3)
        auto fin = freopen(argv[1],"r",stdin);
        AS(fin!=NULL)
        ifstream afile(argv[2]);
        stringstream ss;
        #define cout ss
        int ans_num = 0;
    #endif
    q=getint();
    for(int i=1;i<=q;i++){
        const int n=getint();
        #ifdef OITEST
            if(n>=3){
                ans_num++;
            }
        #endif
        if(n==1){
            const int x=getint();
            /*auto state = */s.insert(x);
            if(x>=v.size())v.resize(x+1);
            v[x]++;
        }else if (n==2) {
            const int x=getint();
            v[x]--;
            if(v[x]==0){s.erase(x);}
        }else if(n==3){
            const int l=getint(),r=getint();
            const auto sl=s.lower_bound(l)
                        ,sr=s.lower_bound(r);
            int ans=0;
            for(auto i=sl;i!=sr;i++){
                ans+=(*i)*v[(*i)];
            }
            if ((*sr)==r) {
                ans+=(*sr)*v[(*sr)];
            }
            cout<<ans<<endl;
        }else if(n==4){
            const int x=getint();
            // if(x==99){
            //     cerr<<"debugging"<<endl;
            // }
            auto it=s.lower_bound(x);
            if((*it)==x){
                cout<<x<<endl;
                continue;
            }else{
                it--;
                if((*it)<x){
                    cout<<(*it)<<endl;
                    continue;
                }else{
                    cout<<-1<<endl;
                    continue;
                }
            }
            cout<<(*it)<<endl;
        }else if(n==5){
            const int x=getint();
            auto it=s.lower_bound(x);
            if(it==s.end()){
                cout<<-1<<endl;
                continue;
            }
            cout<<(*it)<<endl;
        }
    }
    #ifdef OITEST
        for(int i=1;i<=ans_num;i++){
            int cans ,myans;
            afile>>cans;
            ss>>myans;
            ASM(cans,myans)
        }
    #endif
}

int getint(){
    int x=0,w=1;
    char ch=0;
    while(!isdigit(ch)){
        if(ch=='-')w=-1;
        ch=getchar();
    }
    while(isdigit(ch)){
        x=x*10+(ch-'0');
        ch=getchar();
    }
    return x*w;
}