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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#40065	#2831. Game Theory	hit47	TL	134ms	7816kb	C++	1.8kb	2022-07-16 00:42:51	2022-07-16 00:42:52

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.

[2022-07-16 00:42:52]
评测

测评结果：TL
用时：134ms
内存：7816kb

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[2022-07-16 00:42:51]
提交

answer

#include<bits/stdc++.h>
#define ll long long 
const ll mod=998244353,N=2e5+10;
using namespace std;
int tree[N*4],lan[N*4],n;
char s[N];
void build(int root,int l,int r)
{
	lan[root]=0;
	if(l==r){
		tree[root]=(int)(s[l]-'0');
		return;
	}
	int mid=l+r>>1;
	build(root<<1,l,mid);
	build(root<<1|1,mid+1,r);
	tree[root]=tree[root<<1]+tree[root<<1|1];
}
void update(int root,int l,int r,int left,int right)
{
	if(lan[root])
	{
		lan[root]=0;
		int mid=l+r>>1;
		if(l!=r)lan[root<<1]=1,lan[root<<1|1]=1,tree[root<<1]=mid+1-l-tree[root<<1],tree[root<<1|1]=r-mid-tree[root<<1|1];
	}
	if(l>=left && r<=right)
	{
		tree[root]=r+1-l-tree[root];lan[root]=1;
		return;
	}
	if(l>right || r<left)return;
	int mid=l+r>>1;
	update(root<<1,l,mid,left,right);
	update(root<<1|1,mid+1,r,left,right);
	tree[root]=tree[root<<1]+tree[root<<1 | 1];
}
int query(int root,int l,int r,int left,int right)
{
	if(lan[root])
	{
		lan[root]=0;
		int mid=l+r>>1;
		if(l!=r)lan[root<<1]=1,lan[root<<1|1]=1,tree[root<<1]=mid+1-l-tree[root<<1],tree[root<<1|1]=r-mid-tree[root<<1|1];
	}
	if(l>=left && r<=right)return tree[root];
	if(l>right || r<left)return 0;
	int mid=l+r>>1;
	return query(root<<1,l,mid,left,right)+query(root<<1|1,mid+1,r,left,right);
}
long long erfen(int l,int r)
{
	if(l==r)return 0;
	int mid=l+r>>1;
	return query(1,1,n,mid+1,r)*(mid+1-l-query(1,1,n,l,mid))*2+erfen(l,mid)+erfen(mid+1,r);
}
int main()
{
	int q,i,j;
	long long ans,k,t;
	while(scanf("%d%d",&n,&q)!=EOF)
	{
		scanf("%s",s+1);
		build(1,1,n);
		k=0;
		for(i=n;i>=1;--i)
		if(s[i]=='1')ans++,k++;
		else ans+=k;
		for(i=1;i<=q;++i)
		{
			int l,r;
			scanf("%d%d",&l,&r);
			update(1,1,n,l,r);
			ans=erfen(1,n)+query(1,1,n,1,n);
			printf("%lld\n",ans%mod);
		}
	}
}

Source code, Language: C++

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 0ms

memory: 5772kb

input:

output:

1
3
5

result:

ok 3 lines

Test #2:

score: 0

Accepted

time: 3ms

memory: 5768kb

input:

1 1
0
1 1

output:

result:

ok single line: '1'

Test #3:

score: 0

Accepted

time: 58ms

memory: 5740kb

input:

output:

result:

ok 200000 lines

Test #4:

score: 0

Accepted

time: 134ms

memory: 7816kb

input:

11 20
00010111000
1 6
1 11
5 6
8 11
1 4
3 8
4 11
1 7
5 9
1 4
6 10
5 6
1 7
5 10
1 10
9 11
6 8
1 4
8 11
1 4
10 20
0101000010
3 4
2 2
4 8
4 6
6 7
3 7
3 3
1 5
1 5
6 8
2 2
2 4
2 6
5 7
1 3
2 5
6 8
7 9
5 8
3 10
4 20
1011
2 4
1 4
1 3
2 3
1 1
2 2
1 2
2 4
1 2
3 4
3 4
3 4
1 4
2 2
1 4
1 3
1 1
1 3
1 3
2 2
4 20
1...

output:

result:

ok 200000 lines

Test #5:

score: -100

Time Limit Exceeded

input:

11 200
11100010010
2 3
3 7
1 7
3 10
1 3
7 11
2 8
4 8
9 10
9 11
2 7
1 4
9 11
6 7
4 4
8 10
2 6
2 3
1 2
5 7
2 7
1 3
3 4
2 10
9 10
6 11
3 11
3 9
9 10
2 6
5 10
1 8
4 9
6 7
8 11
3 9
7 10
1 9
4 5
5 8
5 7
2 7
6 8
10 10
5 10
7 11
1 11
6 10
2 11
1 4
4 8
6 11
7 10
8 10
4 5
7 10
7 8
4 4
1 6
7 11
3 5
4 9
3 9
8 1...

output: