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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#30496#3300. Cactus CompetitionY25tWA 9ms22916kbC++202.0kb2022-04-29 10:44:502022-04-29 10:44:53

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.
  • [2022-04-29 10:44:53]
  • 评测
  • 测评结果:WA
  • 用时:9ms
  • 内存:22916kb
  • [2022-04-29 10:44:50]
  • 提交

answer

#include<bits/stdc++.h>
#define inf 0x3f3f3f3f
#define N 200005

int n,m,a[N],b[N];

#define W 18
int f[N][W],g[N][W],h[N][W];

#define pii std::pair<int,int>
std::vector<pii> st;

int l[N],r[N];
inline void sol(){
	for(int i=1;i<=m;i++)
		f[i][0]=g[i][0]=b[i];
	for(int j=1;j<W;j++)
		for(int i=1;i+(1<<j)-1<=m;i++){
			f[i][j]=std::max(f[i][j-1],f[i+(1<<(j-1))][j-1]);
			g[i][j]=std::min(g[i][j-1],g[i+(1<<(j-1))][j-1]);
		}
	b[n+1]=-inf;
	st.clear();
	st.emplace_back(inf,0);
	for(int i=1;i<=n;i++){
		while(st.size()&&st.back().first<=a[i])
			st.pop_back();
		st.emplace_back(a[i],i);
		int x=0,mn=inf;
		for(int j=W-1;~j;j--)
			if(x+(1<<j)<=m&&f[x+1][j]+a[i]<0)
				mn=std::min(mn,g[x+1][j]),x+=1<<j;
		mn=std::min(mn,b[++x]);
		h[i][0]=std::prev(std::upper_bound(st.begin(),st.end(),pii(-mn,0),std::greater<pii>()))->second;
	}
	for(int j=1;j<W;j++)
		for(int i=1;i+(1<<j)-1<=n;i++)
			h[i][j]=std::min(h[i][j-1],h[i+(1<<(j-1))][j-1]);
	for(int i=n;i;i--){
		r[i]=i-1;
		for(int j=W-1;~j;j--)
			if(r[i]+(1<<j)<=n&&h[r[i]+1][j]>=i)
				r[i]+=(1<<j);
	}
}

std::vector<int> A[N],B[N];

int t[N];
inline int lb(int x){
	return x&-x;
}
inline void add(int x){
	for(;x<=n;x+=lb(x))
		t[x]++;
}
inline int sum(int x){
	int res=0;
	for(;x;x-=lb(x))
		res+=t[x];
	return res;
}

long long ans;

int main(){
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++)
		scanf("%d",&a[i]);
	for(int i=1;i<=m;i++)
		scanf("%d",&b[i]);
	for(int o=0;o<2;o++){
		sol();
		std::reverse(a+1,a+n+1),std::reverse(b+1,b+n+1);
		std::swap(l,r);
	}
	std::reverse(l+1,l+n+1);
	for(int i=1;i<=n;i++)
		l[i]=n-l[i]+1;
	int mn=inf;
	for(int i=1;i<=m;i++)
		mn=std::min(mn,b[i]);
	for(int i=n,x=n+1;i;i--){
		if(a[i]+mn>=0)
			x=i;
		if(x<=r[i]){
			A[r[i]].emplace_back(i);
			B[x-1].emplace_back(i);
		}
	}
	for(int i=1;i<=n;i++){
		add(l[i]);
		for(auto x:A[i])
			ans+=sum(x);
		for(auto x:B[i])
			ans-=sum(x);
	}
	printf("%lld\n",ans);
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 9ms
memory: 20972kb

input:

3 3
-1 0 1
-1 0 1

output:

1

result:

ok single line: '1'

Test #2:

score: 0
Accepted
time: 2ms
memory: 22296kb

input:

3 3
-1 0 1
1 0 1

output:

5

result:

ok single line: '5'

Test #3:

score: 0
Accepted
time: 3ms
memory: 20180kb

input:

10 10
145195799 312862766 143966779 -11056226 -503624929 636383890 -182650312 -382759112 -290767690 377894950
-845235881 -418232930 -600566938 -957917357 -181139226 125255273 -175406945 740226783 -750456842 325848662

output:

0

result:

ok single line: '0'

Test #4:

score: 0
Accepted
time: 2ms
memory: 21184kb

input:

10 10
923415743 -503391272 885740174 329644337 -693052351 -53764994 731859967 -834732760 -57751504 151969590
553689579 313784278 -12090771 921222379 -378313551 819586787 -373658045 559813071 671861309 268258615

output:

13

result:

ok single line: '13'

Test #5:

score: 0
Accepted
time: 1ms
memory: 20048kb

input:

10 10
-123276196 264891802 609485405 -980113903 152483893 57563748 -454135131 618686452 545983457 236619926
648896419 838269531 -380077537 536463844 89691984 38425645 759165084 325716532 330825142 -472414030

output:

12

result:

ok single line: '12'

Test #6:

score: 0
Accepted
time: 2ms
memory: 22456kb

input:

10 10
982508669 144806400 -503165973 760719995 -249757698 -573349946 -974145393 -905114292 218260516 -582308724
-341366248 187422683 298181900 -305351333 -616330465 -358958909 499163196 -967112195 -892547772 -605274022

output:

1

result:

ok single line: '1'

Test #7:

score: 0
Accepted
time: 2ms
memory: 21028kb

input:

10 10
-46634296 998649898 637256009 858343376 -339756903 750734027 533317110 509238419 -386390857 573123021
281094131 -798662878 454769235 -725579556 448648301 -937460999 -94310392 -504422439 -566805692 -883657655

output:

2

result:

ok single line: '2'

Test #8:

score: 0
Accepted
time: 2ms
memory: 21256kb

input:

10 10
-448680004 -918586552 -352190179 959516158 674275159 -778874335 -736749389 -368418013 103878020 562512923
-493932809 -736960513 78543198 885372691 -119140562 627952281 733778437 115556860 -196686999 -530143800

output:

3

result:

ok single line: '3'

Test #9:

score: 0
Accepted
time: 2ms
memory: 21012kb

input:

10 10
438736217 -79057408 749090846 -106479211 -864134653 49806870 -724192950 -354806728 -230893984 130090227
-313678558 -493317070 -704907097 -240066585 275905249 -440144088 -697190358 608351624 783121279 -54163556

output:

1

result:

ok single line: '1'

Test #10:

score: 0
Accepted
time: 4ms
memory: 22488kb

input:

10 10
910467973 475480237 284540173 -490003419 -496858639 575308046 -772115835 -650286781 -946294433 -375903216
465208966 198897340 37926241 -452764487 81169636 803610511 943188813 773420180 248487883 -932609634

output:

0

result:

ok single line: '0'

Test #11:

score: 0
Accepted
time: 5ms
memory: 22772kb

input:

10 10
-717662422 899539843 686516865 -308859590 731187727 948271874 -278705921 533338789 378708586 -53953529
-819295682 -712753496 -588162402 -765119207 518537239 793210677 199564253 443460314 248599384 333581283

output:

14

result:

ok single line: '14'

Test #12:

score: 0
Accepted
time: 2ms
memory: 21340kb

input:

10 10
13154473 419018121 -416088051 751464183 -782740304 257733919 -917880927 -690282918 410240353 817939924
440852087 -846511822 -519300757 153508300 757901474 928246448 -132837037 -603019187 860960474 -381787006

output:

0

result:

ok single line: '0'

Test #13:

score: 0
Accepted
time: 2ms
memory: 22916kb

input:

10 10
-357608489 679822152 25019791 265926477 -309098231 -7866110 -344995594 54868813 319830921 627547981
-431127028 -396320203 -35574917 657270168 -452580497 -359511978 -443174072 195670048 -696354158 2633147

output:

0

result:

ok single line: '0'

Test #14:

score: 0
Accepted
time: 0ms
memory: 20252kb

input:

10 10
126298083 -169291689 736314121 784469908 642788743 -450191333 -98804016 -511077469 -691147937 -275067405
440527703 -329746015 -473928781 -114255013 -450714278 -903623369 888225605 -146644734 173060316 214649350

output:

0

result:

ok single line: '0'

Test #15:

score: 0
Accepted
time: 4ms
memory: 21412kb

input:

10 10
-631748556 73286407 324751086 157696597 846447361 -444570059 484021795 -258058046 -116283058 -158063251
712663587 -233692952 820220037 516771553 879333593 156354440 -36643636 -639052753 -790959020 950256682

output:

30

result:

ok single line: '30'

Test #16:

score: -100
Wrong Answer
time: 2ms
memory: 20180kb

input:

20 10
-623445264 -424346675 38726811 -683309080 312098721 491569101 58067873 265188450 933087599 -786006093 -652539909 -790632832 780472328 -854541037 -851647529 130095820 35107516 -49396621 -476857996 -420750398
102904427 387758770 -297785914 -909492241 54351476 480814965 -450898650 532245762 14578...

output:

10

result:

wrong answer 1st lines differ - expected: '5', found: '10'