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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#422487#5029. 在路上fzj200732 849ms63916kbC++144.1kb2024-05-27 15:00:562024-05-27 15:00:57

Judging History

你现在查看的是最新测评结果

  • [2024-05-27 15:00:57]
  • 评测
  • 测评结果:32
  • 用时:849ms
  • 内存:63916kb
  • [2024-05-27 15:00:56]
  • 提交

answer

#include"path.h"
#include<bits/stdc++.h>
using namespace std;
#define N 100005
int n,siz[N],mx[N],vis[N];
vector<int> e[N],fat[N];
inline void dfs(int x){
	for(auto v:e[x])
		dfs(v),siz[x]+=siz[v],mx[x]=max(mx[x],siz[v]);
	mx[x]=max(mx[x],n-siz[x]);
}
inline int solve(vector<pair<int,int>> vec){
	if(vec.size()==1) return vec[0].first;
	if(vec.size()==2) return vec[0].second>vec[1].second?vec[0].first:vec[1].first;
	for(auto tmp:vec) siz[tmp.first]=tmp.second,mx[tmp.first]=0;
	int r=vec[0].first;
	for(int i=1;i<vec.size();i++)
		for(int j=i+1;j<vec.size();j++){
			int x=vec[i].first,y=vec[j].first,res=ask(r,x,y);
			if(res==x) fat[y].emplace_back(x);
			if(res==y) fat[x].emplace_back(y);
		}
	for(int i=1;i<vec.size();i++) fat[vec[i].first].emplace_back(r);
	for(int i=1;i<vec.size();i++){
		int x=vec[i].first;
		for(auto tmp:vec) vis[tmp.first]=0;
		for(auto tmp:fat[x]) vis[tmp]=1;
		int num=0;
		for(int j=0;j<vec.size();j++){
			int y=vec[j].first;
			if(vis[y]&&fat[y].size()+1==fat[x].size()) num++,e[y].emplace_back(x);
		}
		assert(num>=1);
	}
	dfs(r);
	int rt=0;
	for(auto tmp:vec){
		int v=tmp.first;
		if(!rt||mx[v]<mx[rt]) rt=v;
	}
	for(auto tmp:vec){
		int v=tmp.first;
		fat[v].clear(),e[v].clear(),siz[v]=mx[v]=0;
	}
	return rt;
}
mt19937 rng(1);
inline int rd(int l,int r){
	return rng()%(r-l+1)+l;
}
namespace Chain{
	int val[N];
	inline int calc(vector<pair<int,int>> vec){
		if(vec.size()<=10) return solve(vec);
		for(auto tmp:vec) val[tmp.first]=tmp.second;
		int k=rd(0,vec.size()-1),pos=rd(0,vec.size()-1);
		while(val[vec[k].first]>1||k==pos) k=rd(0,vec.size()-1),pos=rd(0,vec.size()-1);
		k=vec[k].first,pos=vec[pos].first;
		assert(val[k]==1);
		vector<pair<int,int>> L,R;
		int lsum=0,rsum=0;
		L.emplace_back(pos,val[pos]),lsum+=val[pos];
		for(auto tmp:vec){
			int x=tmp.first;
			if(x==k||x==pos) continue;
			if(ask(k,pos,x)==k){
				R.emplace_back(x,val[x]),rsum+=val[x];
			}else{
				L.emplace_back(x,val[x]),lsum+=val[x];
			}
		}
		if(lsum==rsum) return k;
		if(lsum<rsum) swap(lsum,rsum),swap(L,R);
		L.emplace_back(k,1+rsum);
		for(auto tmp:vec) val[tmp.first]=0;
		return calc(L);
	}
	inline int solve(int n){
		vector<pair<int,int>> vec;
		for(int i=1;i<=n;i++) vec.emplace_back(i,1);
		return calc(vec);
	}
}
namespace All{
	int val[N],used[N],sum[32],app[N];
	vector<pair<int,int>> son[32];
	inline int calc(vector<pair<int,int>> vec){
		if(vec.size()<=30) return solve(vec);
		for(auto tmp:vec) val[tmp.first]=tmp.second;
		int x=rd(0,vec.size()-1),y=rd(0,vec.size()-1),k=-1;
		while(x==y) x=rd(0,vec.size()-1),y=rd(0,vec.size()-1);
		for(auto tmp:vec){
			int v=tmp.first,r=ask(x,y,v);
			if(!r) continue;
			k=r;
			break;			
		}
		vector<int> pos;
		for(int i=0;i<vec.size();i++)
			if(vec[i].first!=k) pos.emplace_back(vec[i].first);
		shuffle(pos.begin(),pos.end(),rng);
		used[k]=1;
		int tot=0;
		for(int i=0;i<30;i++){
			app[i]=-1;
			for(int j=0;j<i;j++){
				if(ask(pos[i],pos[j],k)!=k){
					app[i]=app[j];
					break;
				}
			}
			if(app[i]==-1){
				tot++,son[tot].clear(),sum[tot]=0;
				app[i]=tot;
			}
			son[app[i]].emplace_back(pos[i],val[pos[i]]),sum[app[i]]+=val[pos[i]],used[pos[i]]=1;
		}
		int els=0;
		for(auto tmp:vec){
			int x=tmp.first;
			if(used[x]) continue;
			bool flag=0;
			for(int i=1;i<=tot;i++){
				if(ask(k,x,son[i][0].first)!=k){
					son[i].emplace_back(x,val[x]),sum[i]+=val[x];
					flag=1;
					break;
				}
			}
			if(!flag) els+=val[x];
		}
		int p=0;
		for(int i=1;i<=tot;i++) 
			if(!p||sum[i]>sum[p]) p=i;
		for(auto tmp:vec) used[tmp.first]=0;
		if(sum[p]<=n/2) return k;
		for(int i=1;i<=tot;i++)
			if(i!=p) els+=sum[i];
		son[p].emplace_back(k,val[k]+els);
		return calc(son[p]);
	}
	inline int solve(int n){
		vector<pair<int,int>> vec;
		for(int i=1;i<=n;i++) vec.emplace_back(i,1);
		return calc(vec);
	}
}
int centroid(int id,int _n,int m){
	n=_n;
	if(id==1) return ask(1,2,3);
	if(id==2){
		vector<pair<int,int>> vec;
		for(int i=1;i<=n;i++) vec.emplace_back(i,1);
		return solve(vec);
	}
	if(id==3||id==5) return Chain::solve(n);
	return All::solve(n);
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 2
Accepted

Test #1:

score: 2
Accepted
time: 0ms
memory: 16312kb

input:

1 100 100
3
1 2
3
1 2
3
3 1
3
1 2
3
1 2
3
3 1
3
1 2
3
3 1
3
1 2
3
3 1
3
3 1
3
3 1
3
3 1
3
3 1
3
3 1
3
3 1
3
3 1
3
1 2
3
1 2
3
3 1
3
3 1
3
1 2
3
3 1
3
3 1
3
1 2
3
3 1
3
3 1
3
1 2
3
3 1
3
3 1
3
3 1
3
1 2
3
1 2
3
3 1
3
3 1
3
1 2
3
1 2
3
1 2
3
1 2
3
3 1
3
3 1
3
3 1
3
1 2
3
1 2
3
1 2
3
3 1
3
3 1
3
3 1
3
...

result:

ok correct

Subtask #2:

score: 0
Runtime Error

Test #2:

score: 8
Accepted
time: 105ms
memory: 24620kb

input:

2 10 10000000
999
60 112 98 509 586 175 588 875 861 516 920 370 781 249 999 649 292 308 934 949 437 92 506 752 547 866 869 510 984 228 104 612 202 630 360 809 56 107 566 448 940 726 146 299 941 50 319 794 670 603 365 492 728 872 829 942 451 632 373 106 909 25 306 995 735 99 568 673 75 573 383 407 56...

result:

ok correct

Test #3:

score: 0
Accepted
time: 115ms
memory: 26492kb

input:

2 10 10000000
999
60 112 98 509 586 175 588 875 861 516 920 370 781 249 999 649 292 308 934 949 437 92 506 752 547 866 869 510 984 228 104 612 202 630 360 809 56 107 566 448 940 726 146 299 941 50 319 794 670 603 365 492 728 872 829 942 451 632 373 106 909 25 306 995 735 99 568 673 75 573 383 407 56...

result:

ok correct

Test #4:

score: 0
Accepted
time: 103ms
memory: 24224kb

input:

2 10 10000000
999
60 112 959 68 586 835 91 836 634 516 272 912 781 249 655 11 466 103 934 816 904 92 576 83 687 435 871 510 758 519 842 882 339 221 2 917 5 605 477 448 323 723 744 494 941 50 668 751 670 336 365 95 877 159 829 957 451 632 591 616 909 83 452 607 735 99 22 570 755 354 172 711 742 870 3...

result:

ok correct

Test #5:

score: 0
Accepted
time: 104ms
memory: 20976kb

input:

2 10 10000000
999
373 769 355 568 586 175 588 836 203 901 272 948 781 80 655 11 292 103 934 595 904 188 865 989 698 493 871 510 893 228 842 882 339 630 2 550 829 107 477 636 385 726 146 299 764 670 668 381 631 336 365 95 974 872 829 733 678 669 373 571 183 752 452 607 735 179 22 673 755 354 383 711 ...

result:

ok correct

Test #6:

score: 0
Accepted
time: 71ms
memory: 22256kb

input:

2 10 10000000
999
688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 68...

result:

ok correct

Test #7:

score: 0
Accepted
time: 72ms
memory: 20556kb

input:

2 10 10000000
999
688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 688 68...

result:

ok correct

Test #8:

score: 0
Accepted
time: 111ms
memory: 22212kb

input:

2 10 10000000
999
158 826 595 867 47 385 664 154 455 857 622 561 166 780 801 763 33 310 605 36 199 718 762 911 419 109 947 369 861 841 902 657 172 175 461 814 473 43 90 875 62 238 669 791 68 435 405 663 756 255 628 798 745 878 257 773 652 662 832 735 75 363 129 359 230 351 667 873 602 783 988 253 58...

result:

ok correct

Test #9:

score: 0
Accepted
time: 108ms
memory: 19944kb

input:

2 10 10000000
999
279 772 39 665 622 173 514 309 407 623 288 342 100 529 202 417 132 611 186 430 634 796 454 842 92 53 977 712 975 158 654 66 822 452 6 333 596 593 91 119 242 503 190 82 97 575 663 574 75 598 299 334 31 147 382 988 702 11 801 338 164 696 573 182 899 948 507 168 331 939 442 137 581 52...

result:

ok correct

Test #10:

score: 0
Accepted
time: 95ms
memory: 22268kb

input:

2 10 10000000
999
60 208 208 208 208 175 208 875 861 208 208 370 208 208 208 208 292 208 208 949 208 208 208 752 547 208 869 510 208 208 208 612 208 208 360 809 208 107 208 448 208 208 208 208 941 208 319 794 208 603 208 208 208 208 208 208 451 208 373 106 208 25 306 208 735 99 208 673 208 573 383 2...

result:

ok correct

Test #11:

score: 0
Accepted
time: 93ms
memory: 24100kb

input:

2 10 10000000
999
60 208 208 208 208 175 208 875 861 208 208 370 208 208 208 208 292 208 208 949 208 208 208 752 547 208 869 510 208 208 208 612 208 208 360 809 208 107 208 448 208 208 208 208 941 208 319 794 208 603 208 208 208 208 208 208 451 208 373 106 208 25 306 208 735 99 208 673 208 573 383 2...

result:

ok correct

Test #12:

score: 0
Accepted
time: 89ms
memory: 18888kb

input:

2 10 10000000
999
198 236 761 86 644 189 7 741 274 656 547 36 825 827 740 333 896 832 575 37 359 456 833 590 427 837 100 60 424 237 208 742 266 543 941 906 422 423 953 787 397 337 215 469 979 51 404 546 603 168 849 472 737 135 500 701 608 696 764 695 64 590 851 194 89 278 864 314 529 165 448 414 471...

result:

ok correct

Test #13:

score: 0
Accepted
time: 87ms
memory: 20308kb

input:

2 10 10000000
999
198 236 761 86 644 189 7 741 274 656 547 36 825 827 740 333 896 832 575 37 359 456 833 590 427 837 100 60 424 237 208 742 266 543 941 906 422 423 953 787 397 337 215 469 979 51 404 546 603 168 849 472 737 135 500 701 608 696 764 695 64 590 851 194 89 278 864 314 529 165 448 414 471...

result:

ok correct

Test #14:

score: 0
Accepted
time: 106ms
memory: 23180kb

input:

2 10 10000000
999
60 112 98 509 586 175 588 875 861 516 920 370 781 249 999 649 292 308 934 949 437 92 506 752 547 866 869 510 984 228 338 612 202 630 360 809 56 107 566 448 940 726 146 299 941 50 319 794 670 603 365 492 728 872 829 942 451 632 373 106 909 25 306 995 735 99 568 673 75 573 383 407 56...

result:

ok correct

Test #15:

score: 0
Accepted
time: 107ms
memory: 26308kb

input:

2 10 10000000
999
60 112 98 509 586 175 588 875 861 516 920 370 781 249 999 649 292 308 934 949 437 92 506 752 547 866 869 510 984 228 991 612 202 630 360 809 56 107 566 448 940 726 146 299 941 50 319 794 670 603 365 492 728 872 829 942 451 632 373 106 909 25 306 995 735 99 568 673 75 573 383 407 56...

result:

ok correct

Test #16:

score: 0
Accepted
time: 105ms
memory: 26156kb

input:

2 10 10000000
999
60 112 125 509 291 175 588 875 861 516 920 370 781 618 999 649 292 45 934 949 437 92 506 752 547 866 869 510 208 991 338 612 208 630 360 809 56 107 737 448 940 726 208 291 941 50 319 794 670 603 365 618 291 159 829 942 451 632 373 106 847 25 306 125 735 99 568 673 642 573 383 338 5...

result:

ok correct

Test #17:

score: 0
Accepted
time: 105ms
memory: 24048kb

input:

2 10 10000000
999
60 112 338 509 847 175 588 875 861 516 920 370 781 249 999 649 292 618 934 949 437 92 506 752 547 866 869 510 125 291 515 612 737 630 360 809 56 107 208 448 940 726 515 338 941 50 319 794 670 603 365 125 125 515 829 942 451 632 373 106 902 25 306 515 735 99 568 673 907 573 383 291 ...

result:

ok correct

Test #18:

score: 0
Accepted
time: 90ms
memory: 22104kb

input:

2 10 10000000
999
60 736 736 736 736 175 736 875 861 736 736 370 736 736 736 736 292 736 736 949 736 736 736 752 547 736 869 510 736 736 736 612 736 736 360 809 736 107 736 448 736 736 736 736 941 736 319 794 736 603 736 736 736 736 736 736 451 736 373 106 736 25 306 736 735 99 736 673 736 573 383 7...

result:

ok correct

Test #19:

score: 0
Accepted
time: 87ms
memory: 24416kb

input:

2 10 10000000
999
60 736 736 736 736 175 736 875 861 736 736 370 736 736 736 736 292 736 736 949 736 736 736 752 547 736 869 510 736 736 736 612 736 736 360 809 736 107 736 448 736 736 736 736 941 736 319 794 736 603 736 736 736 736 736 736 451 736 373 106 736 25 306 736 735 99 736 673 736 573 383 7...

result:

ok correct

Test #20:

score: -8
Runtime Error

input:

2 10 10000000
999
60 825 542 207 182 175 71 875 861 275 642 370 725 600 184 242 292 978 56 949 189 839 896 752 547 479 869 510 328 592 288 612 373 975 360 809 317 107 642 448 822 742 200 947 941 614 319 794 580 603 473 760 89 872 342 160 451 326 373 106 488 25 306 39 735 99 533 673 94 573 383 473 56...

result:


Subtask #3:

score: 12
Accepted

Test #22:

score: 12
Accepted
time: 12ms
memory: 19000kb

input:

3 100 10000000
999
328 852 537 953 554 506 483 192 443 912 989 346 935 232 652 528 261 899 131 531 81 686 815 543 991 810 576 639 670 572 604 842 546 322 916 97 510 160 238 696 882 214 212 194 102 964 719 255 416 260 687 148 225 664 105 100 913 600 921 203 571 406 752 189 929 716 523 809 666 589 235...

result:

ok correct

Test #23:

score: 0
Accepted
time: 17ms
memory: 24536kb

input:

3 100 10000000
999
603 168 694 35 890 839 431 506 172 225 322 14 231 221 387 802 768 786 858 954 214 929 553 795 917 554 453 983 112 196 5 428 421 149 960 294 875 380 900 914 135 141 398 480 716 377 693 832 582 629 59 975 998 513 351 193 293 328 677 96 338 39 569 236 243 849 254 418 877 413 7 675 69...

result:

ok correct

Test #24:

score: 0
Accepted
time: 15ms
memory: 18988kb

input:

3 100 10000000
999
232 191 603 626 730 411 104 65 39 494 691 185 208 192 567 818 210 162 385 511 733 860 72 765 262 635 485 516 768 426 641 477 334 92 555 520 173 296 621 80 312 695 168 760 182 556 716 457 123 718 147 474 246 9 221 369 266 912 365 247 575 86 120 584 755 525 527 276 623 323 572 550 1...

result:

ok correct

Test #25:

score: 0
Accepted
time: 16ms
memory: 18484kb

input:

3 100 10000000
999
37 333 429 430 950 395 199 67 394 239 625 725 586 176 839 401 226 14 898 931 541 738 560 638 302 457 846 468 193 423 215 692 746 262 722 43 869 984 510 181 977 809 805 327 22 444 208 768 47 372 946 20 958 863 147 409 224 95 466 694 837 167 195 949 778 24 126 953 852 480 730 365 13...

result:

ok correct

Test #26:

score: 0
Accepted
time: 12ms
memory: 22764kb

input:

3 100 10000000
999
289 402 626 749 480 763 773 565 829 569 200 303 980 734 514 539 440 769 674 130 102 117 798 994 919 493 149 456 109 121 587 835 386 851 657 268 67 382 612 792 541 883 742 436 403 968 872 60 983 260 76 550 571 158 635 428 877 807 681 604 513 598 459 218 173 599 683 308 727 221 733 ...

result:

ok correct

Subtask #4:

score: 0
Wrong Answer

Test #27:

score: 0
Wrong Answer
time: 18ms
memory: 22588kb

input:

4 100 10000000
999
710 227 715 954 623 585 538 236 363 913 540 3 897 998 726 919 976 843 796 69 415 705 647 707 201 696 993 545 325 375 47 260 490 385 828 162 29 278 867 593 395 219 178 518 999 685 307 772 224 187 557 89 575 524 1 157 230 341 708 978 473 995 15 179 743 416 263 640 4 851 520 719 679 ...

result:

wrong answer 

Subtask #5:

score: 18
Accepted

Test #47:

score: 18
Accepted
time: 832ms
memory: 62220kb

input:

5 100 25000000
49999
3753 28650 36024 8322 47241 9061 43764 6338 45160 16765 40294 43358 37214 37535 38561 1997 7478 9543 11661 1953 7391 41171 43559 9981 24218 13155 22152 45216 30123 1843 20703 23601 42707 6449 40356 3761 32284 34584 32674 44391 41031 324 14845 6935 37071 38330 48041 1824 41182 46...

result:

ok correct

Test #48:

score: 0
Accepted
time: 849ms
memory: 60572kb

input:

5 100 25000000
49999
4355 37348 38321 35425 21214 5083 45595 40224 33795 7313 23253 7272 29677 28728 35487 1991 44807 19910 7658 37652 35455 2514 34837 45354 38770 33373 22354 33923 553 32137 13158 39583 34278 32253 41652 2024 4250 27447 26990 40809 10542 48821 40099 43201 16468 13915 18394 17223 14...

result:

ok correct

Test #49:

score: 0
Accepted
time: 849ms
memory: 61400kb

input:

5 100 25000000
49999
35421 12483 27611 26116 3078 41676 32102 20450 46565 7259 31701 39279 7716 18095 574 6832 14245 45403 7403 28959 10895 7192 24221 15536 28096 37220 49443 18168 43803 27863 7445 1555 2310 26797 44390 32627 34653 10091 41373 19105 11758 6420 21895 2662 5651 5357 8564 30178 47283 3...

result:

ok correct

Test #50:

score: 0
Accepted
time: 836ms
memory: 61908kb

input:

5 100 25000000
49999
42046 19387 33162 23626 9528 41604 26357 27547 18587 20216 43658 5642 12752 36928 460 17925 6866 9380 29791 10256 12103 24116 39054 21861 14347 21118 23852 31261 10246 23316 46935 39281 41944 47820 43306 25162 42713 17257 29474 32926 12743 18125 14549 23818 22784 22008 37108 364...

result:

ok correct

Test #51:

score: 0
Accepted
time: 816ms
memory: 63916kb

input:

5 100 25000000
49999
47176 35953 43451 38072 40586 17234 18319 28218 37190 15923 25135 40310 27316 17131 2164 26393 41753 47710 22396 27790 22627 49297 10917 11986 44920 27629 27944 14780 16282 11016 36590 34850 43230 85 27951 1338 3203 33927 49761 49552 16274 3167 49305 34706 25494 47457 14679 2608...

result:

ok correct

Subtask #6:

score: 0
Wrong Answer

Test #52:

score: 0
Wrong Answer
time: 173ms
memory: 32792kb

input:

6 100 40000000
9999
3929 7460 4617 7377 498 7572 4628 3661 2404 9179 755 4076 8531 6581 1929 9419 1498 4402 6412 712 4918 2628 798 6283 9427 9775 1472 5554 2146 9972 5228 5459 8417 6778 3121 7649 1031 7691 6270 2238 4885 6121 2099 3435 4615 9962 6384 8809 9169 4553 66 1939 8589 2029 4897 7334 2867 8...

result:

wrong answer 

Subtask #7:

score: 0
Wrong Answer

Test #72:

score: 0
Wrong Answer
time: 280ms
memory: 37908kb

input:

7 50 40000000
29999
12447 18709 13054 17585 8337 14953 7985 1930 24383 1787 2543 26860 12198 2842 14256 8665 17034 6429 14773 8646 27093 6362 29357 18001 10667 8445 6671 21435 27163 14604 19875 745 20772 6696 16391 15560 16789 10983 6199 23133 13 13688 14547 8390 4398 21653 14460 690 24385 5358 2213...

result:

wrong answer 

Subtask #8:

score: 0
Wrong Answer

Test #92:

score: 0
Wrong Answer
time: 563ms
memory: 46136kb

input:

8 100 50000000
29999
8375 16777 16700 20953 11899 14682 20874 25860 28858 23241 5089 8044 25448 17746 5605 3087 9145 20179 1080 22944 27383 8384 19943 15371 27572 7882 23028 10474 18744 20202 15687 17001 7543 18709 23165 15713 17032 29011 22353 17455 26045 3484 20330 15159 21274 382 23927 20114 6303...

result:

wrong answer