Submission #61790719

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#include<bits/stdc++.h>
#define int long long
#define f(i,j,n) for(int i=j;i<=n;i++)
#define F(i,n,j) for(int i=n;i>=j;i--)
#define updmax(a,b) a=max(a,b)
#define updmin(a,b) a=min(a,b)
#define pb push_back
#define XQZ
using namespace std;
namespace fsd{
#define gc() (p1==p2&&(p2=(p1=buf)+fread(buf,1,MAXSIZE,stdin),p1==p2)?EOF:*p1++)
  const int MAXSIZE=1<<20;
  char buf[MAXSIZE],*p1,*p2;
  inline int read(){
    int ak=0,ioi=1;char c=gc();
    while(!isdigit(c)){if(c=='-')ioi=-1;c=gc();}
    while(isdigit(c))ak=ak*10+(c^48),c=gc();
    return ak*ioi;
  }
  inline string reads(){
    string o="";
 
 
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#include<bits/stdc++.h>
#define int long long
#define f(i,j,n) for(int i=j;i<=n;i++)
#define F(i,n,j) for(int i=n;i>=j;i--)
#define updmax(a,b) a=max(a,b)
#define updmin(a,b) a=min(a,b)
#define pb push_back
#define XQZ
using namespace std;
namespace fsd{
#define gc() (p1==p2&&(p2=(p1=buf)+fread(buf,1,MAXSIZE,stdin),p1==p2)?EOF:*p1++)
	const int MAXSIZE=1<<20;
	char buf[MAXSIZE],*p1,*p2;
	inline int read(){
		int ak=0,ioi=1;char c=gc();
		while(!isdigit(c)){if(c=='-')ioi=-1;c=gc();}
		while(isdigit(c))ak=ak*10+(c^48),c=gc();
		return ak*ioi;
	}
	inline string reads(){
		string o="";
		char p=gc();
		while(p>'z'||p<'a'){p=gc();}
		while(p<='z'&&p>='a'){o+=p;p=gc();}
		return o;
	}
	inline char readc(){
		char p=gc();
		while(!((p<='z'&&p>='a')||(p<='Z'&&p>='A'))){p=gc();}
		return p;
	}
	inline long double readd(){
		long double ak=0;int ioi=1;char c=gc();
		while(!isdigit(c)){if(c=='-')ioi=-1;c=gc();}
		while(isdigit(c))ak*=10,ak+=c-'0',c=gc();
		c=gc();
		long double q=0.1;
		while(isdigit(c))ak+=(c-'0')*q,q*=0.1,c=gc();
		return ak*ioi;
	}
}
using namespace fsd;
int s[300010],t,b;
void gs(){
	int q=read();
	f(i,1,q){
		int opt=read(),x;
		if(opt==1){
			x=read();
			s[b+1]=s[b]+x;
			b++;
		}else if(opt==2){
			t++;
		}else{
			x=read();
			cout<<s[x-1+t]-s[t]<<endl;
		}
	}
}
signed main(){
#ifndef XQZ
	freopen(".in","r",stdin);
	freopen(".out","w",stdout);
#endif
#ifdef NXD
	int t=0;cin>>t;while(t--)
#endif
		gs();
	return 0;
}

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