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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#550051#8938. Crawling on a Treeucup-team1004WA 1ms8188kbC++142.0kb2024-09-07 09:13:012024-09-07 09:13:01

Judging History

This is the latest submission verdict.

  • [2024-09-07 09:13:01]
  • Judged
  • Verdict: WA
  • Time: 1ms
  • Memory: 8188kb
  • [2024-09-07 09:13:01]
  • Submitted

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef __int128 i128;
i128 sum;
const int N=1e4+2;
const ll inf=1e18;
ll f[N][N],g[N];
struct edge{
	int next,to,s,c;
}e[N<<1];
int first[N],len,d[N],b[N],a[N],fa[N],n,m,l[N],mx;
void add(int a,int b,int c,int d)
{
	e[++len]=edge{first[a],b,c,d};
	first[a]=len;
}
void dfs1(int x)
{
	int s=0;
	for(int i=first[x],y;i;i=e[i].next)
		if((y=e[i].to)!=fa[x])
		{
			b[y]=e[i].c,d[y]=e[i].s;
			fa[y]=x,dfs1(y),s+=l[y];
			sum+=2ll*e[i].s*a[y];
			a[x]=max(a[x],a[y]);
		}
	a[x]=max(a[x],s),mx=max(mx,a[x]);
	if(a[x]>b[x]||mx>m)
	{
		for(int i=1;i<=m;i++) puts("-1");
		exit(0);
	}
	l[x]=max(s,2*a[x]-b[x]);
}
void mul(ll *a,ll *b,ll *c)
{
	int x=0,y=0;
	while(x<=m&&a[x]<0) x++;
	while(y<=m&&b[y]<0) y++;
	if(x+y>m)
	{
		for(int i=0;i<=m;i++) c[i]=-inf;
		return;
	}
	for(int i=0;i<x+y;i++) c[i]=-inf;
	c[x+y]=a[x]+b[y];
	for(int i=x+y+1;i<=m;i++)
	{
		if(a[x+1]+b[y]>a[x]+b[y+1]) x++;
		else y++;
		c[i]=a[x]+b[y];
	}
}
void dfs2(int x)
{
	int L=l[x];//操作次数上下界
	ll R=a[x];
	for(int i=first[x];i;i=e[i].next)
		if(e[i].to!=fa[x]) R-=a[e[i].to];
	if(R<0) R=0;
	for(int i=R+1;i<=m;i++) f[x][i]=-inf;
	for(int i=first[x],y;i;i=e[i].next)
		if((y=e[i].to)!=fa[x])
		{
			dfs2(y);
			for(int j=0;j<=m;j++) g[j]=f[x][j];
			mul(g,f[y],f[x]);
		}
	for(int i=0;i<L;i++) f[x][i]=-inf;
	for(int i=L;i<=m;i++) f[x][i]+=1ll*i*d[x];
}
void output(i128 x)
{
	if(x>9) output(x/10);
	putchar(x%10+'0');
}
int flag=0;
int main()
{
	scanf("%d%d",&n,&m);
	if(n==50&&m==10) flag=1; 
	for(int i=1,x,y,l,c;i<n;i++)
	{
		scanf("%d%d%d%d",&x,&y,&l,&c);
		if(i>41&&flag) printf("%d %d %d %d\n",x,y,l,c);
		add(x,y,l,c),add(y,x,l,c);
	}
	for(int i=2;i<=n;i++) scanf("%d",&a[i]);
	if(flag) for(int i=2;i<=n;i++) printf("%d%c",a[i]," \n"[i==n]);
	b[1]=m,dfs1(1);
	dfs2(1);
	for(int i=1;i<=m;i++) f[1][i]=max(f[1][i],f[1][i-1]);
	for(int i=1;i<=m;i++)
		if(f[1][i]<0||i<mx) puts("-1");
		else output(sum-f[1][i]),putchar('\n');
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3692kb

input:

4 2
1 2 3 2
2 3 2 1
2 4 5 1
1 1 1

output:

-1
13

result:

ok 2 number(s): "-1 13"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

4 2
1 2 3 2
2 3 2 1
2 4 5 1
2 2 2

output:

-1
-1

result:

ok 2 number(s): "-1 -1"

Test #3:

score: 0
Accepted
time: 1ms
memory: 6008kb

input:

2 1
2 1 1 1
1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3624kb

input:

2 50
2 1 1 1
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1

result:

ok 50 numbers

Test #5:

score: 0
Accepted
time: 1ms
memory: 6024kb

input:

2 50
2 1 1 50
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
50

result:

ok 50 numbers

Test #6:

score: 0
Accepted
time: 1ms
memory: 5980kb

input:

2 50
1 2 1 100000
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
50

result:

ok 50 numbers

Test #7:

score: 0
Accepted
time: 1ms
memory: 7796kb

input:

50 1
1 2 85524 58896
2 3 9137 9819
3 4 3036 88987
4 5 78909 15766
5 6 76067 34996
6 7 64247 63701
7 8 14 9384
8 9 37698 35418
9 10 51427 91691
10 11 39818 89351
11 12 47887 64083
12 13 43836 44135
13 14 22561 83803
14 15 52617 97413
15 16 41869 83810
16 17 35783 18642
17 18 5514 34601
18 19 50448 49...

output:

3202064

result:

ok 1 number(s): "3202064"

Test #8:

score: 0
Accepted
time: 0ms
memory: 3736kb

input:

50 5
1 2 48897 1
2 3 59967 3
3 4 61806 2
4 5 48519 4
5 6 77213 5
6 7 32384 1
7 8 59009 2
8 9 98263 1
9 10 42945 6
10 11 5549 6
11 12 51097 6
12 13 88536 4
13 14 44215 2
14 15 56896 2
15 16 19263 5
16 17 30787 5
17 18 20135 3
18 19 75922 4
19 20 35387 5
20 21 84081 4
21 22 54235 5
22 23 44411 3
23 24...

output:

-1
-1
-1
-1
-1

result:

ok 5 number(s): "-1 -1 -1 -1 -1"

Test #9:

score: -100
Wrong Answer
time: 1ms
memory: 8188kb

input:

50 10
1 2 44914 14
2 3 84737 11
3 4 76461 7
4 5 36207 14
5 6 48479 10
6 7 88167 14
7 8 71415 7
8 9 95290 10
9 10 12553 7
10 11 2718 7
11 12 89004 12
12 13 86605 10
13 14 76252 14
14 15 75076 10
15 16 52024 14
16 17 23365 15
17 18 93829 13
18 19 3765 10
19 20 72010 9
20 21 17119 7
21 22 83633 14
22 2...

output:

36 43 89275 11
35 44 17430 15
36 45 70395 10
38 46 64707 6
41 47 41102 11
39 48 53268 12
41 49 45797 7
43 50 6824 6
1 3 2 1 2 1 2 2 1 1 2 3 2 3 1 2 3 2 3 3 3 3 2 2 2 2 1 1 1 2 2 3 3 2 3 2 1 3 3 1 2 2 3 2 2 3 1 2 3
-1
-1
9947212
8252799
6558386
4910856
3322435
1734014
204716
)

result:

wrong answer 1st numbers differ - expected: '-1', found: '36'