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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 |
---|---|---|---|---|---|---|---|---|---|
#683405 | #7895. Graph Partitioning 2 | crychic | WA | 37ms | 11092kb | C++17 | 2.9kb | 2024-10-27 20:51:25 | 2024-10-27 20:51:25 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int n,k;
const int N = 1e5 + 50;
vector<int> e[N];
const int P = 998244353;
const int limit = 350 + 10;
ll dp[N][limit];
ll tmp[limit];
int siz[N],now[N];
void dfs0(int u,int fa){
siz[u] = 1;
for(int v:e[u]){
if(v == fa) continue;
dfs0(v,u);
siz[u] += siz[v];
}
}
void dfs1(int u,int fa){
for(int v:e[u]){
if(v == fa) continue;
dfs1(v,u);
}
int t_sz = 1;
dp[u][1] = 1;
for(int v:e[u]){
if(v == fa) continue;
for(int i = 0;i <= k + 1;i ++){
tmp[i] = 0;
}
for(int i = min(t_sz,k + 1);i;i --){
for(int j = 0;j + i <= (k + 1) && j <= siz[v];j ++){
tmp[j + i] += dp[u][i] * dp[v][j] % P;
tmp[j + i] %= P;
}
}
for(int i = 0;i <= k + 1;i ++){
dp[u][i] = tmp[i];
}
t_sz += siz[v];
t_sz = min(t_sz,k + 1);
}
dp[u][0] = dp[u][k] + dp[u][k + 1];
dp[u][0] %= P;
}
void dfs2(int u,int fa){
for(int v:e[u]){
if(v == fa)continue;
dfs2(v,u);
}
int t_sz = 1;
dp[u][0] = 1;
for(int v:e[u]){
if(v == fa)continue;
for(int i = 0;i < limit;i ++){
tmp[i] = 0;
}
for(int i = (t_sz - 1) / k;i >= 0;i --){
for(int j = 0;j + i <= (t_sz + siz[v]) / k && j <= (siz[v]) / k;j ++){
int tmp = (t_sz - i * k) % (k + 1) + (siz[v] - j * k) % (k + 1);
if(tmp <= k){
dp[u][j + i] += dp[u][i] * dp[fa][j] % P;
if(tmp == k){
dp[u][j + i + 1] += dp[u][i] * dp[fa][j] % P;
dp[u][j + i + 1] %= P;
}
dp[u][j + i] %= P;
}
}
}
t_sz += siz[v];
for(int i = 0;i < limit;i ++){
dp[u][i] = tmp[i];
}
t_sz = min(t_sz,k + 1);
}
}
void solve(){
cin >> n >> k;
for(int i = 1;i <= n;i ++){
e[i].clear();
for(int j = 0;j < limit;j ++){
dp[i][j] = 0;
}
}
for(int i = 1;i < n;i ++){
int u,v;
cin >> u >> v;
e[u].push_back(v);
e[v].push_back(u);
}
dfs0(1,0);
if(k + 10< limit){
dfs1(1,1);
cout << dp[1][0] << '\n';
}else {
// assert(0);
dfs2(1,1);
ll ans = 0;
for(int i = 0;i <= (siz[1]) / k;i ++){
if((siz[1] - i * k) % (k + 1) == 0)ans += dp[1][i];
ans %= P;
}
cout << ans << '\n';
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr),cout.tie(0);
int t = 1;
cin >> t;
while(t --)solve();
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 8936kb
input:
2 8 2 1 2 3 1 4 6 3 5 2 4 8 5 5 7 4 3 1 2 1 3 2 4
output:
2 1
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 37ms
memory: 11092kb
input:
5550 13 4 10 3 9 1 10 8 3 11 8 5 10 7 9 6 13 5 9 7 2 7 5 12 4 8 8 2 4 1 3 4 7 8 2 5 6 7 4 8 2 3 11 1 11 10 1 4 9 10 8 4 3 6 5 7 6 1 10 2 11 7 11 1 17 2 14 16 13 15 17 3 15 11 1 6 13 2 13 17 4 8 14 10 8 14 14 5 9 12 14 2 12 17 17 6 15 7 14 6 2 14 2 13 2 4 8 4 3 11 7 3 14 1 11 9 13 3 5 10 6 8 3 10 14 ...
output:
0 3 112 0 1 0 1 0 0 0 1 0 1 0 0 1 0 140 0 0 0 814 1 6 1 1 2 2 0 612 0 1 0 0 0 1 1 0 0 121 4536 0 0 1718 0 0 1 0 444 1 1908 1813 3 74 0 1 0 46 0 0 0 0 0 0 0 0 0 1 0 1 1 1 239 0 0 0 1 0 0 0 1 0 1 0 0 1 1 0 0 0 1 0 0 0 48 0 2 0 0 0 1 364 0 206 0 0 76 0 1 0 0 2 0 1 2 0 0 1 0 0 4 0 1 1 0 0 1 1 1 0 0 1 1 ...
result:
wrong answer 5509th lines differ - expected: '1', found: '0'