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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#623932 | #6107. One Path | cjx | WA | 1ms | 5952kb | C++20 | 2.0kb | 2024-10-09 14:23:55 | 2024-10-09 14:24:02 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define fi first
#define se second
using namespace std;
long long read(){
long long x=0,f=1;char ch=getchar();
while(!isdigit(ch))
{if(ch=='-') f=-1;ch=getchar();}
while(isdigit(ch)){x=x*10+ch-48;ch=getchar();}
return x*f;
}
void write(long long x){
if(x<0) putchar('-'),x=-x;
if(x>9) write(x/10);
putchar(x%10+'0');
}
const int N=2010;
int n,k,sz[N];
int head[N],ver[N<<1],nxt[N<<1],tot;
ll edge[N<<1],f[N][N][3];
void add(int x,int y,ll z){
ver[++tot]=y,edge[tot]=z,nxt[tot]=head[x],head[x]=tot;
}
void dfs1(int x,int fa){
sz[x]=1;
f[x][0][0]=f[x][0][1]=-1e10;
for(int i=head[x];i;i=nxt[i]){
int y=ver[i];
if(y==fa)continue;
dfs1(y,x);
for(int p=sz[x];p>=0;p--){
for(int q=1;q<=sz[y];q++){
f[x][p+q][1]=max(f[x][p+q][1],max(f[x][p][2]+f[y][q][1],f[x][p][0]+f[y][q+1][0]+edge[i]));
f[x][p+q][1]=max(f[x][p+q][1],f[x][p][1]+f[y][q][2]);
f[x][p+q][2]=max(f[x][p+q][2],max(f[x][p][2]+f[y][q][2],f[x][p][2]+f[y][q][1]+edge[i]));
f[x][p+q][0]=max(f[x][p+q][0],f[x][p][2]+f[y][q][0]+edge[i]);
f[x][p+q][0]=max(f[x][p+q][0],f[x][p][2]+f[y][q-1][2]+edge[i]);
f[x][p+q][0]=max(f[x][p+q][0],f[x][p][0]+f[y][q][2]);
}
f[x][p][1]=max(f[x][p][1],f[x][p][0]+f[y][1][0]+edge[i]);
}
sz[x]+=sz[y];
}
for(int i=1;i<=sz[x];i++)
for(int j=0;j<3;j++){
f[x][i][j]=max(f[x][i][j],f[x][i-1][j]);
//printf("f[%d][%d][%d]=%lld\n",x,i,j,f[x][i][j]);
}
}
int main(){
//freopen(".in","r",stdin);
//freopen(".out","w",stdout);
n=read();k=read();
for(int i=1;i<n;i++){
int x=read(),y=read(),z=read();
add(x,y,z);add(y,x,z);
}
dfs1(1,0);
for(int i=0;i<=k;i++){
printf("%lld ",f[1][min(i+1,n)][1]);
}
puts("");
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 5900kb
input:
5 1 1 3 2 4 5 4 3 4 3 2 3 7
output:
14 16
result:
ok 2 number(s): "14 16"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
7 2 1 2 4 2 3 6 2 4 2 4 5 5 2 6 1 4 7 3
output:
13 20 21
result:
ok 3 number(s): "13 20 21"
Test #3:
score: -100
Wrong Answer
time: 1ms
memory: 5952kb
input:
50 2000 3 34 1 37 39 58720256 17 24 14680064 28 39 1 25 38 1 21 29 1 3 30 1 26 36 1 5 48 14336 4 22 1 26 41 1 41 44 1 5 14 1 23 25 28672 40 41 224 27 39 1 4 20 7340032 7 47 939524096 11 46 114688 30 49 3584 34 44 1 7 35 1 10 29 1 27 33 29360128 16 36 56 8 28 1 13 38 57344 34 45 896 15 35 469762048 1...
output:
1409286145 1761607683 1849688069 1871708167 1875378184 1878130698 1878589451 1878933516 1879019534 1879041040 1879046418 1879047315 1879047988 1879048101 1879048158 1879048159 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 187...
result:
wrong answer 5th numbers differ - expected: '1877213193', found: '1875378184'