QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#108756#5123. StreetsshenxingeWA 610ms22376kbC++141.4kb2023-05-26 16:40:012023-05-26 16:40:04

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.
  • [2023-05-26 16:40:04]
  • 评测
  • 测评结果:WA
  • 用时:610ms
  • 内存:22376kb
  • [2023-05-26 16:40:01]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
constexpr int maxn(1e5+10),maxe(1e5);
int n,m,T,X[maxn],Y[maxn],A[maxn],B[maxn],va[maxn],vb[maxn],f[maxn][22],st[maxn],top,inf,mx,c;
inline int F(int i,int j){return i*vb[j]+j*va[i];}
inline int check(int i,int j){
	for(int l=20;l;l--) if(f[f[j][l]][0]&&F(i,f[j][l])>=F(i,f[f[j][l]][0])) j=f[j][l];
	if(j!=mx&&F(i,f[j][0])<=c) return true; else return F(i,j)<=c;
}
signed main(){
	ios::sync_with_stdio(false),cin.tie(nullptr);
	cin >> n >> m >> T;memset(va,0x3f,sizeof va),memset(vb,0x3f,sizeof vb),inf=vb[0];
	for(int i=1;i<=n;i++) cin >> X[i];for(int i=1;i<=n;i++) cin >> A[i];
	for(int i=1;i<=m;i++) cin >> Y[i];for(int i=1;i<=m;i++) cin >> B[i];
	for(int i=1;i<=n;i++) for(int j=1;j<i;j++) va[X[i]-X[j]]=min(va[X[i]-X[j]],A[i]+A[j]);
	for(int i=1;i<=m;i++) for(int j=1;j<i;j++) vb[Y[i]-Y[j]]=min(vb[Y[i]-Y[j]],B[i]+B[j]);
	for(int i=maxe;i;i--) if(vb[i]!=inf){
		while(top>1&&(vb[st[top]]-vb[i])*(st[top]-i)>=(vb[st[top-1]]-vb[st[top]])*(st[top-1]-st[top])) top--;
		if(!top) mx=i; else f[i][0]=st[top]; st[++top]=i;
	}
	for(int i=1;i<=20;i++) for(int u=1;u<=maxe;u++) f[u][i]=f[f[u][i-1]][i-1];
	while(T--){cin >> c;int ans=0;
		for(int i=maxe,p=1;i;i--) if(va[i]!=inf) while(true){
			while(p<=mx&&vb[p]==inf) p++;
			if(p<=mx&&check(i,p)) ans=max(ans,i*p),p++;
			else break;
		}cout << ans << '\n';
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 20ms
memory: 22044kb

input:

3 4 20
1 3 4
3 1 2
1 3 4 7
4 2 1 2
1
5
6
7
9
10
11
12
15
16
17
22
23
28
30
35
43
47
49
57

output:

0
0
1
1
1
2
2
3
3
4
4
6
6
9
9
12
12
12
18
18

result:

ok 20 numbers

Test #2:

score: -100
Wrong Answer
time: 610ms
memory: 22376kb

input:

4995 4998 100
4 7 20 34 44 100 102 130 175 198 205 250 257 259 267 278 300 324 337 346 353 364 403 427 439 440 451 523 532 534 555 599 634 639 756 802 805 825 855 859 890 905 912 915 953 989 1014 1031 1052 1059 1097 1124 1183 1216 1297 1308 1337 1342 1361 1392 1400 1421 1451 1471 1523 1537 1542 1619...

output:

9991201920
9892820960
2587511860
9859439425
8879702340
9986903784
9882703404
9859439425
9275666650
6591142320
9242863770
3455112440
8182361570
9857548260
9903504408
9859439425
9859439425
9760617730
9857548260
6692905800
2587511860
9240534020
9874285344
3498166220
8360168090
9820211688
2699248350
924...

result:

wrong answer 2nd numbers differ - expected: '9941157660', found: '9892820960'