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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#78505#5278. Mex and CardsYanagi_OrigamiWA 2ms5860kbC++142.5kb2023-02-19 10:49:092023-02-19 10:49:11

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-02-19 10:49:11]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:5860kb
  • [2023-02-19 10:49:09]
  • 提交

answer

#include <iostream>
#include <cstdio>
#include <cmath>
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define per(i,a,b) for(int i=a;i>=b;i--)
using namespace std;
const int N=2e5+5;
typedef long long ll;
int n,a[N],b[N];
struct node{
	int Min,l,r,tag;
	ll sum;
}seg[N<<2];
ll calc(int l,int r,int w){
	return 1ll*(r-l+1)*w;
}
void pushdown(int p){
	if(seg[p].tag==-1) return ;
	seg[p<<1].tag=seg[p].tag;
	seg[p<<1|1].tag=seg[p].tag;
	seg[p<<1].sum=calc(seg[p<<1].l,seg[p<<1].r,seg[p].tag);
	seg[p<<1|1].sum=calc(seg[p<<1|1].l,seg[p<<1|1].r,seg[p].tag);
	seg[p].tag=-1;
}
void upd(int p){
	seg[p].Min=min(seg[p<<1].Min,seg[p<<1|1].Min);
	seg[p].sum=seg[p<<1].sum+seg[p<<1|1].sum;
}
int queryless(int p,int l,int r,int x){
	if(l==r){
		return seg[p].Min<=x?l:(n+1);
	}
	pushdown(p);
	int mid=(l+r)>>1;
	if(seg[p<<1].Min<=x) return queryless(p<<1,l,mid,x);
	else return queryless(p<<1|1,mid+1,r,x);
}
int querypre(int p,int l,int r,int R){
	if(r<=R){
		return seg[p].Min;
	}
	if(l>R) return n+1;
	pushdown(p);
	int mid=(l+r)>>1;
	return min(querypre(p<<1,l,mid,R),querypre(p<<1|1,mid+1,r,R));
}
void build(int p,int l,int r){
	if(l==r){
		seg[p].tag=-1;
		seg[p].Min=a[l];
		seg[p].sum=b[l];
		seg[p].l=l; seg[p].r=r;
		return ;
	}
	seg[p].tag=-1;
	int mid=(l+r)>>1;
	build(p<<1,l,mid),build(p<<1|1,mid+1,r);
	upd(p);
}
void modify(int p,int l,int r,int L,int R,int x){
	if(L==l&&r==R){
		seg[p].tag=x;
		seg[p].sum=calc(l,r,x);
		return ;
	}
	pushdown(p);
	int mid=(l+r)>>1;
	if(R<=mid) modify(p<<1,l,mid,L,R,x); else
	if(L>mid) modify(p<<1|1,mid+1,r,L,R,x); else
	modify(p<<1,l,mid,L,mid,x),modify(p<<1|1,mid+1,r,mid+1,R,x);
	upd(p);
}
void Modify(int p,int l,int r,int x){
	if(l==r){
		seg[p].Min=a[l];
		return ;
	}
	pushdown(p);
	int mid=(l+r)>>1;
	if(x<=mid) Modify(p<<1,l,mid,x);
	else Modify(p<<1|1,mid+1,r,x);
	upd(p);
}
int main(){
	scanf("%d",&n);
	rep(i,1,n) scanf("%d",a+i);
	b[1]=a[1];
	rep(i,2,n) b[i]=min(b[i-1],a[i]);
	build(1,1,n);
	printf("%lld\n",seg[1].sum);
	int Q; scanf("%d",&Q);
	while(Q--){
		int opt,p;
		scanf("%d%d",&opt,&p);
		p++;
		if(opt==1){
			a[p]++;
			Modify(1,1,n,p);
			int Min=querypre(1,1,n,p);
			int ps=queryless(1,1,n,Min-1);
			modify(1,1,n,p,ps-1,Min);
		}else{
			a[p]--;
			Modify(1,1,n,p);
			int Min=querypre(1,1,n,p);
			int ps=queryless(1,1,n,Min-1);
			modify(1,1,n,p,ps-1,Min);
		}
		printf("%lld\n",seg[1].sum);
	}
	return 0;
}
/*
5
2 1 3 0 2
6
1 0
1 1
2 4
1 3
2 1
2 1
*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 5628kb

input:

5
2 1 3 0 2
6
1 0
1 1
2 4
1 3
2 1
2 1

output:

4
5
7
7
9
7
3

result:

ok 7 numbers

Test #2:

score: 0
Accepted
time: 2ms
memory: 5860kb

input:

1
0
0

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: -100
Wrong Answer
time: 2ms
memory: 5848kb

input:

10
3 8 1 4 10 3 10 9 7 10
20
2 5
1 4
1 2
1 4
1 3
1 3
1 0
2 8
1 5
1 4
1 0
1 3
1 8
1 6
1 4
1 1
1 5
1 9
1 6
2 7

output:

14
14
14
22
22
22
22
24
20
24
24
26
26
22
26
26
26
26
22
26
26

result:

wrong answer 9th numbers differ - expected: '24', found: '20'