QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#559399 | #8220. 众生之门 | DaiRuiChen007 | 10 | 114ms | 7076kb | C++17 | 1.5kb | 2024-09-11 21:52:21 | 2024-09-11 21:52:22 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int MAXN=5e4+5;
mt19937 rnd(time(0));
int rd(int l,int r) { return rnd()%(r-l+1)+l; }
vector <int> G[MAXN];
int dep[MAXN],dfn[MAXN],st[MAXN][20],dcnt;
void dfs(int u,int fz) {
dep[u]=dep[fz]+1,dfn[u]=++dcnt,st[dcnt][0]=fz;
for(int v:G[u]) if(v^fz) dfs(v,u);
}
int bit(int x) { return 1<<x; }
int cmp(int x,int y) { return dfn[x]<dfn[y]?x:y; }
int dis(int u,int v) {
if(u==v) return 0;
int l=min(dfn[u],dfn[v])+1,r=max(dfn[u],dfn[v]),k=__lg(r-l+1);
return dep[u]+dep[v]-2*dep[cmp(st[l][k],st[r-bit(k)+1][k])];
}
int x[MAXN];
int val(int i) { return dis(x[i-1],x[i])^dis(x[i],x[i+1]); }
void solve() {
int n,s,t;
scanf("%d%d%d",&n,&s,&t);
for(int i=1;i<=n;++i) G[i].clear();
for(int i=1,u,v;i<n;++i) scanf("%d%d",&u,&v),G[u].push_back(v),G[v].push_back(u);
if(n==2) return printf("%d %d\n",s,t),void();
if(n==3) return printf("%d %d %d\n",s,s^t,t),void();
dcnt=0,dfs(1,0);
for(int k=1;k<20;++k) for(int i=1;i+bit(k)-1<=n;++i) st[i][k]=cmp(st[i][k-1],st[i+bit(k-1)][k-1]);
iota(x+1,x+n+1,1);
x[1]=s,x[s]=1,x[t]=n,x[n]=t;
for(int Q=5;Q--;) {
shuffle(x+2,x+n,rnd);
int w=0;
for(int i=1;i<n;++i) w^=dis(x[i],x[i+1]);
for(int T=n*15;T--;) {
int i=rd(2,n-1),j=rd(2,n-1);
while(i==j) j=rd(2,n-1);
w^=val(i)^val(j),swap(x[i],x[j]),w^=val(i)^val(j);
if(w<2) goto G;
}
}
G:for(int i=1;i<=n;++i) printf("%d ",x[i]); puts("");
}
signed main() {
int T; scanf("%d",&T);
while(T--) solve();
return 0;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 5160kb
input:
114 6 5 6 2 6 1 6 4 5 3 1 6 4 6 3 6 2 4 4 1 6 4 1 5 5 3 6 6 1 5 2 1 2 4 6 2 4 3 2 6 6 1 3 6 5 3 1 6 4 2 2 5 6 3 1 5 3 2 4 1 5 4 3 6 3 4 3 4 2 3 1 4 4 3 6 3 1 2 3 6 3 4 3 1 6 5 1 5 3 2 1 2 4 2 2 3 5 2 6 1 4 2 1 5 2 4 1 6 2 3 6 6 5 1 4 2 6 5 1 3 2 6 3 2 4 4 1 2 4 3 4 1 4 6 2 5 3 5 4 6 1 4 6 2 5 4 6 1 ...
output:
5 2 4 1 3 6 3 1 2 4 5 6 6 2 4 5 3 1 6 5 4 2 3 1 6 4 5 1 2 1 3 1 2 4 6 2 5 4 1 1 3 5 4 1 2 1 6 2 3 5 4 6 1 3 2 4 1 4 3 2 1 2 6 3 1 4 5 1 5 4 2 6 3 6 1 4 5 2 1 2 3 6 5 1 4 3 1 5 6 2 4 5 6 2 1 4 3 1 3 4 2 5 4 3 4 2 3 5 1 2 4 1 3 2 4 3 4 1 2 5 4 3 5 2 5 2 4 3 1 5 2 4 1 6 3 4 5 2...
result:
FAIL Your path should begin with s in test case 5.
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Wrong Answer
Test #11:
score: 0
Wrong Answer
time: 114ms
memory: 5168kb
input:
14190 43 27 2 42 3 30 36 11 24 21 22 13 8 22 30 31 29 35 1 10 6 2 23 28 17 2 26 7 37 5 19 38 43 33 39 4 28 33 7 25 31 15 1 32 18 34 27 35 12 19 32 20 17 37 42 26 34 39 10 12 27 24 43 18 6 16 9 38 9 14 15 14 41 25 3 40 13 16 8 36 41 20 5 21 40 11 29 41 24 38 21 6 20 14 26 1 6 7 17 16 39 36 8 18 36 11...
output:
27 14 7 34 40 16 39 28 22 36 19 26 13 1 15 12 24 43 10 9 20 5 37 31 11 30 8 35 41 6 25 32 23 29 42 17 18 33 21 4 38 3 2 24 29 6 13 26 41 4 34 37 30 2 20 18 11 1 36 31 14 22 5 10 3 39 12 15 17 28 16 27 35 8 19 33 21 9 32 7 40 23 25 38 5 4 25 11 19 7 12 23 2 21 27 20 18 15 14 1 9 6 10 8 3 16 13 24 1...
result:
FAIL Your path should begin with s in test case 10.
Subtask #4:
score: 0
Wrong Answer
Test #18:
score: 0
Wrong Answer
time: 96ms
memory: 6436kb
input:
32752 15 3 4 14 12 4 12 1 10 9 13 7 6 12 5 1 12 9 15 7 9 8 12 2 6 11 6 9 3 6 10 13 12 2 10 11 10 5 1 4 12 11 4 6 2 13 6 5 9 6 8 13 6 3 4 8 13 7 15 3 6 15 10 4 2 8 5 10 3 1 3 15 2 8 4 12 9 7 8 11 8 6 13 8 12 14 8 6 12 15 5 7 8 14 10 13 11 13 13 5 2 14 15 8 15 1 6 2 7 15 9 13 15 3 6 13 15 4 12 5 15 10...
output:
3 14 7 9 10 15 8 6 11 12 1 13 5 2 4 12 5 3 13 8 1 10 9 4 7 11 6 2 3 2 1 11 9 5 4 10 7 15 12 8 14 13 6 5 12 6 4 9 15 11 1 8 14 13 3 10 2 7 10 3 12 9 11 7 4 5 13 14 15 1 6 2 8 11 11 8 10 6 7 2 9 5 4 3 11 3 8 7 15 14 5 4 2 12 1 6 10 13 9 14 13 3 8 11 6 14 7 2 10 4 5 9 12 5 10 9 6 2 4 7 8 11 1 3...
result:
FAIL Your output should be a permutation in test case 6.
Subtask #5:
score: 0
Wrong Answer
Test #25:
score: 0
Wrong Answer
time: 88ms
memory: 5076kb
input:
36059 13 9 4 5 9 10 3 3 1 13 5 12 5 7 4 2 8 8 10 4 9 11 7 6 11 1 4 13 12 6 4 12 13 9 11 2 6 12 9 12 8 5 7 6 5 3 3 7 10 8 1 5 2 10 13 10 8 3 1 5 9 4 8 6 11 7 13 13 5 1 10 12 13 9 4 11 9 2 11 8 10 12 1 4 9 2 2 12 3 2 12 11 8 2 7 4 5 1 4 1 11 7 10 9 6 9 13 10 12 7 5 11 9 12 10 9 8 3 10 8 5 4 13 13 7 6 ...
output:
9 2 7 1 6 13 8 3 10 12 11 5 4 12 7 1 5 13 2 3 10 9 8 11 4 6 10 11 2 6 5 7 12 9 4 3 13 1 8 1 3 5 12 2 8 6 9 10 7 11 4 10 7 13 2 11 3 6 4 5 9 8 1 12 6 4 10 2 1 13 7 11 9 5 3 12 8 1 12 6 5 13 7 4 10 3 2 9 11 8 7 1 5 8 6 9 10 4 2 3 13 4 3 10 5 9 12 7 1 2 6 8 1 4 3 11 13 5 12 8 7 9 1 10 2 6 6 1...
result:
FAIL Your path should begin with s in test case 9.
Subtask #6:
score: 10
Accepted
Test #34:
score: 10
Accepted
time: 3ms
memory: 6972kb
input:
10 1000 165 244 175 661 738 362 280 462 776 922 231 578 963 615 639 836 32 418 519 220 565 733 239 951 768 847 196 200 246 119 591 288 994 586 313 46 971 515 512 811 228 908 627 339 33 337 447 488 616 319 399 727 921 615 421 509 167 354 905 382 20 356 875 414 619 904 824 940 435 244 953 663 719 962 ...
output:
165 546 550 585 658 202 376 167 669 469 598 228 169 104 141 709 900 54 862 949 491 359 810 624 115 476 479 68 803 774 983 691 616 312 861 19 435 771 936 542 799 712 908 806 45 73 860 697 500 365 986 363 372 833 382 297 755 438 967 158 826 867 702 993 281 53 151 275 663 498 825 311 65 375 490 718 667...
result:
ok Answer correct!
Test #35:
score: 10
Accepted
time: 3ms
memory: 7076kb
input:
10 1000 382 266 590 318 797 98 35 830 950 354 905 784 998 709 853 583 165 498 288 727 822 759 576 543 193 715 883 839 847 872 255 61 995 187 125 742 575 697 621 939 711 248 445 683 848 907 171 215 511 807 196 453 166 930 231 716 327 96 866 680 909 549 188 554 33 273 486 74 32 577 37 573 376 148 709 ...
output:
382 546 550 585 658 202 376 167 669 469 598 228 169 104 141 436 900 54 541 949 491 359 810 624 115 476 479 68 803 774 983 691 616 312 861 19 412 771 936 542 799 712 908 806 45 73 860 697 500 365 986 943 372 833 1 297 755 438 967 158 826 867 702 993 281 53 151 275 663 808 825 311 65 375 490 718 667 8...
result:
ok Answer correct!
Test #36:
score: 10
Accepted
time: 3ms
memory: 5212kb
input:
10 1000 252 455 479 592 266 350 335 8 117 54 580 751 999 484 73 339 97 325 96 336 629 247 947 425 374 458 666 716 498 402 859 866 361 441 627 365 372 505 456 485 376 379 422 416 72 498 489 369 211 537 909 508 12 23 523 738 714 383 556 447 548 773 521 353 76 581 555 780 565 148 672 15 570 768 888 39 ...
output:
252 104 550 585 658 202 376 167 669 469 598 228 169 546 141 670 900 54 541 949 178 359 810 624 23 377 479 68 943 78 983 691 616 62 65 19 412 771 936 542 145 712 856 806 775 73 860 697 500 365 986 803 372 833 382 125 755 438 967 45 826 671 702 993 174 53 151 275 663 808 825 311 255 375 490 793 667 85...
result:
ok Answer correct!
Test #37:
score: 10
Accepted
time: 0ms
memory: 6360kb
input:
10 1000 304 234 651 949 290 646 953 375 867 994 71 810 114 466 924 223 583 869 947 766 627 169 100 616 847 801 20 138 886 364 320 941 866 188 408 606 762 366 842 325 934 184 122 918 736 773 348 289 876 770 913 227 274 176 727 87 18 280 305 595 774 884 441 582 328 711 829 836 891 503 45 971 804 500 6...
output:
304 546 550 585 658 202 376 167 669 469 598 228 169 104 141 709 900 54 862 949 491 359 810 624 115 476 479 68 803 774 983 691 616 312 861 19 435 771 936 542 799 712 908 806 45 73 860 697 500 365 986 363 372 833 382 297 755 438 967 158 826 867 702 993 281 53 151 275 663 808 825 311 65 375 490 718 667...
result:
ok Answer correct!
Test #38:
score: 10
Accepted
time: 3ms
memory: 6672kb
input:
10 1000 105 350 300 724 309 285 319 499 170 893 469 224 304 775 964 858 625 758 529 516 328 239 585 559 341 670 135 549 810 328 439 251 49 198 265 691 30 101 146 261 376 929 981 434 980 439 191 601 764 888 731 801 706 824 203 210 83 419 41 812 176 472 226 117 156 280 996 478 902 761 75 57 542 969 36...
output:
105 546 550 585 658 202 376 167 669 469 598 228 169 104 141 709 900 54 862 949 491 359 810 624 115 476 479 68 803 774 983 691 616 312 861 19 435 771 936 542 799 712 908 806 45 73 860 697 500 365 986 363 372 833 382 297 755 438 967 158 826 867 702 993 281 53 151 275 663 498 825 311 65 375 490 718 667...
result:
ok Answer correct!
Subtask #7:
score: 0
Skipped
Dependency #2:
0%