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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#589527 | #5139. DFS Order 2 | Soestx | WA | 315ms | 513548kb | C++17 | 3.1kb | 2024-09-25 18:16:46 | 2024-09-25 18:16:48 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define fi first
#define se second
#define lowbit(x) (x&(-x))
typedef long long ll;
//typedef unsigned long long ull;
const int N = 1e6 + 10, M = 1e5,mod=998244353;
int n, m, k;
int res;
int dp[510][510][510],dap[510],tp[510][510];
int siz[510],son[510];
int h[510],e[1010],ne[1010],idx;
void add(int a,int b)
{
e[idx]=b,ne[idx]=h[a],h[a]=idx++;
}
int fac[510];
void ini()
{
idx=0;
fac[0]=1;
for(int i=1;i<=n;i++)
{
h[i]=-1;
fac[i]=1ll*fac[i-1]*i%mod;
}
}
ll qpow(ll a,ll b)
{
ll res=1;
while(b)
{
if(b&1) res=res*a%mod;
a=a*a%mod;
b>>=1;
}
return res;
}
int tap[510];
void dfs(int id,int f)
{
siz[id]=1;
dap[id]=1;
int cnt=0;
dp[id][0][0]=1;
for(int i=h[id];i!=-1;i=ne[i])
{
int j=e[i];
if(j==f) continue;
dfs(j,id);
for(int o=siz[id];o>=0;o--)
{
for(int p=cnt;p>=0;p--)
{
int to=o+siz[j];
dp[id][to][p+1]=(1ll*dp[id][to][p+1]+dp[id][o][p]*(p+1)%mod)%mod;
}
}
cnt++;
siz[id]+=siz[j];
dap[id]=1ll*dap[id]*dap[j]%mod;
}
son[id]=cnt;
tap[id]=dap[id];
dap[id]=1ll*dap[id]*fac[cnt]%mod;
}
int tmp[510][510],arr[510];
void DFS(int id,int f)
{
for(int i=h[id];i!=-1;i=ne[i])
{
int j=e[i];
if(j==f) continue;
//cout<<j<<"-----------------------"<<endl;
for(int a=0;a<=siz[id];a++) for(int b=0;b<=son[id];b++) tmp[a][b]=0,arr[a]=0;
for(int o=0;o<=siz[id];o++)
{
for(int p=0;p<=son[id];p++)
{
if(!dp[id][o][p]) continue;
int t=dp[id][o][p];;
if(o>=siz[j]&&p)
t=(1ll*dp[id][o][p]-1ll*p*tmp[o-siz[j]][p-1]%mod);
//cout<<o<<" "<<p<<" "<<dp[id][o][p]<<" "<<dp[id][o-siz[j]][p-1]<<" "<<t<<endl;
t=(t%mod+mod)%mod;
tmp[o][p]=(tmp[o][p]+t)%mod;
}
}
int ty=1ll*tap[id]*qpow(dap[j],mod-2)%mod;
for(int o=0;o<=siz[id];o++)
{
int sum=0;
for(int p=0;p<=son[id];p++)
{
//cout<<o<<" "<<p<<" "<<tmp[o][p]<<endl;
sum=(1ll*sum+tmp[o][p]*fac[son[id]-1-p]%mod)%mod;
}
arr[o]=1ll*sum*ty%mod;
}
for(int o=0;o<=n;o++)
{
for(int p=0;p<=siz[id];p++)
{
int to=o+p+1;
tp[j][to]=(tp[j][to]+1ll*tp[id][o]*arr[p]%mod)%mod;
}
}
}
for(int i=h[id];i!=-1;i=ne[i])
{
int j=e[i];
if(j==f) continue;
DFS(j,id);
}
}
void solve()
{
cin>>n;
ini();
for(int i=1;i<n;i++)
{
int a,b;
cin>>a>>b;
add(a,b);
add(b,a);
}
tp[1][1]=1;
dfs(1,0);
DFS(1,0);
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
//cout<<i<<" "<<j<<" "<<tp[i][j]<<endl;
//cout<<tp[i][j]<<" "<<dap[i]<<endl;
ll t=1ll*tp[i][j]*dap[i]%mod;
t=(t%mod+mod)%mod;
cout<<t<<" ";
//printf("%d ",1ll*tp[i][j]*dap[i]%mod);
}
cout<<endl;
}
}
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int T;
T = 1;
//cin>>T;
while (T--) solve();
return 0;
}
/*
1
2 0
10 15
*/
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 11884kb
input:
5 1 2 1 3 3 4 3 5
output:
4 0 0 0 0 0 2 0 0 2 0 2 2 0 0 0 0 1 2 1 0 0 1 2 1
result:
ok 25 numbers
Test #2:
score: 0
Accepted
time: 3ms
memory: 16024kb
input:
10 9 2 9 6 10 5 1 5 1 6 9 3 5 8 4 3 7 9
output:
24 0 0 0 0 0 0 0 0 0 0 0 0 4 2 2 8 2 2 4 0 0 0 4 4 4 4 4 4 0 0 0 0 0 4 4 4 4 4 4 0 12 0 0 0 0 0 12 0 0 0 12 0 0 12 0 0 0 0 0 0 0 0 4 2 2 8 2 2 4 0 0 6 6 0 0 0 0 6 6 0 0 12 0 0 12 0 0 0 0 0 0 6 6 0 0 0 0 6 6
result:
ok 100 numbers
Test #3:
score: 0
Accepted
time: 0ms
memory: 104520kb
input:
100 18 100 91 87 28 83 11 98 51 52 24 91 72 53 18 19 89 16 77 35 26 25 73 16 96 70 56 44 69 10 63 30 54 95 39 66 58 98 8 71 58 65 74 73 2 64 12 19 32 81 31 54 43 41 84 59 55 75 72 81 59 37 10 94 93 2 64 47 13 32 36 84 28 22 30 28 25 77 47 6 80 52 54 17 23 40 47 88 49 53 65 27 99 59 25 70 91 9 74 1 7...
output:
8388559 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 62914557 0 62914557 62914557 0 62914557 0 0 0 62914557 0 62914557...
result:
ok 10000 numbers
Test #4:
score: 0
Accepted
time: 76ms
memory: 509576kb
input:
500 382 156 418 376 91 15 142 274 449 174 375 82 118 175 421 458 361 222 14 474 11 324 368 341 227 424 231 249 81 435 250 271 118 38 147 61 124 408 135 1 244 316 301 80 39 313 90 118 290 465 465 250 277 341 8 105 319 373 305 379 309 200 180 398 47 489 463 259 173 492 494 343 251 193 111 32 401 270 4...
output:
219078761 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
ok 250000 numbers
Test #5:
score: 0
Accepted
time: 24ms
memory: 511952kb
input:
500 164 415 76 333 437 167 184 28 281 491 40 64 184 6 407 459 141 469 370 186 226 142 165 243 26 175 442 345 496 451 351 277 467 136 42 10 14 435 109 202 22 267 354 312 232 273 141 158 219 356 329 405 212 65 345 166 378 79 114 224 213 79 371 23 454 276 150 9 82 291 24 111 157 396 22 475 268 163 57 8...
output:
744716203 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
ok 250000 numbers
Test #6:
score: 0
Accepted
time: 27ms
memory: 513548kb
input:
500 177 65 367 41 19 51 1 131 95 135 410 397 30 109 357 209 172 357 195 199 167 297 437 232 63 12 194 387 309 12 235 112 32 359 143 66 267 397 467 224 199 383 226 310 435 3 300 206 151 189 198 398 226 287 322 467 244 280 273 9 44 305 273 32 398 15 14 117 199 290 313 76 85 80 34 348 146 458 261 233 2...
output:
171992689 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
ok 250000 numbers
Test #7:
score: -100
Wrong Answer
time: 315ms
memory: 512136kb
input:
500 381 446 399 209 190 247 83 319 1 278 101 82 1 224 1 75 391 382 303 231 220 92 446 494 112 342 73 218 1 148 210 334 1 57 212 44 450 495 17 473 173 122 424 1 196 465 47 305 321 143 458 88 10 439 1 243 391 144 300 397 332 1 232 1 1 152 366 1 100 483 111 25 416 63 242 280 110 1 119 1 234 365 1 475 5...
output:
566360865 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
wrong answer 507th numbers differ - expected: '230860221', found: '830887086'