제출 #477691

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
477691		luka1234	Addk (eJOI21_addk)	C++17	0 / 100	587 ms	1048580 KiB

Main

#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
using namespace std;
int n,q,q1;
int t1[400001];
int t2[100001];
int a[100001];
void build(int v,int tl,int tr){
	if(tl==tr){
		t1[v]=a[tl];
		t2[v]=a[tl]*tl;
	}
	else{
		int m=(tl+tr)/2;
		build(2*v,tl,m);
		build(2*v+1,m+1,tr);
		t1[v]=t1[2*v]+t1[2*v+1];
		t2[v]=t2[2*v]+t2[2*v+1];
	}
}
pair<int,int> get(int v,int tl,int tr,int l,int r){
	if(tl==l&&tr==r){
		return {t1[v],t2[v]};
	}
	int m=(tl+tr)/2;
	if(r<=m){
		return get(2*v,tl,m,l,r);
	}
	else{
		if(l>m){
			return get(2*v+1,m+1,tr,l,r);
		}
		else{
			pair<int,int> pir=get(2*v,tl,m,l,m);
			pair<int,int> meo=get(2*v+1,m+1,tr,m+1,r);
			pair<int,int> mes;
			mes.ff=pir.ff+meo.ff;
			mes.ss=pir.ss+meo.ss;
			return mes;
		}
	}
}
void update(int v,int tl,int tr,int x,int p){
	if(tl==tr){
		t1[v]=x;
		t2[v]=p*x;
	}
	else{
		int m=(tl+tr)/2;
		if(p<=m)
		   update(2*v,tl,m,x,p);
		else
		   update(2*v+1,m+1,tr,x,p);
		t1[v]=t1[2*v]+t1[2*v+1];
		t2[v]=t2[2*v]+t2[2*v+1];
	}
}
int main(){
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
	cin>>n>>q;
	for(int k=1;k<=n;k++)
	    cin>>a[k];
	build(1,1,n);
	cin>>q1;
	while(q1--){
		int x;
		cin>>x;
		if(x==2){ 
			int l,r,m;
			cin>>l>>r>>m;
			if(m==1||m==(r-l+1)){
				int ans=get(1,1,n,l,r).ff;
				cout<<ans<<"\n";
				continue;
			}
			int v=(r-l+1)/2+1;
			int m1;
			if(m<=v){
				m1=m-1;
				if(((r-l+1)%2==0)&&(m==v))
				   m1--;
			}
			else{
				m1=(r-l+1)-m;
			}
			int pir=0,meo=0,mes=0;  
			pair<int,int> vv=get(1,1,n,l,l+m1-1);
			int f=l-1;
			pir=vv.ss-vv.ff*f;
  			vv=get(1,1,n,r-m1+1,r);
			f=r+1;
			meo=vv.ff*f-vv.ss;
			vv=get(1,1,n,l+m1,r-m1);
			int fff=m1+1;
			mes=vv.ff*fff;
			cout<<pir+meo+mes<<"\n";
		}
		else{
			int b[q+1];
			for(int k=1;k<=q;k++)
			    cin>>b[k];
			int f=a[b[1]];
			for(int k=1;k<q;k++){
				a[b[k]]=a[b[k+1]];
				update(1,1,n,a[b[k+1]],b[k]);
			}
			a[b[q]]=f;
			update(1,1,n,f,b[q]);
		}
	}
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:61:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |  freopen("input.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:62:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |  freopen("output.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 36
• Subtask 2: 0 / 56
• Subtask 3: 0 / 8