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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#79513#3276. 出题高手tricyzhkx45 270ms17748kbC++141.8kb2023-02-20 10:26:312023-02-20 10:26:33

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-02-20 10:26:33]
  • 评测
  • 测评结果:45
  • 用时:270ms
  • 内存:17748kb
  • [2023-02-20 10:26:31]
  • 提交

answer

# include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n,L[500010],R[500010],a[500010],sum[500010],stk[500010];
template<typename T>
void upd(T &a,const T &b){a=max(a,b);}
struct Frac
{
	int a,b;// a^2/b
	Frac(int _a=0,int _b=0):a(_a),b(_b){}
	bool operator<(const Frac &x)const{return (ll)a*a*x.b<(ll)x.a*x.a*b;}
}maxn[500010],ans[300010];
struct Query
{
	int l,r,id;
	bool operator<(const Query &x)const{return l>x.l;}
}que[300010];
bool cmpl(Query a,Query b){return a.l>b.l;}
bool cmpr(Query a,Query b){return a.r<b.r;}
void update(int x,const Frac &y){for(int i=x;i<=n;i+=i&(-i)) upd(maxn[i],y);}
Frac query(int x)
{
	Frac ans(0,1);
	for(int i=x;i;i-=i&(-i)) upd(ans,maxn[i]);
	return ans;
}
int main()
{
	int q,tp=0;
	cin>>n;
	for(int i=1;i<=n;i++) scanf("%d",&a[i]),sum[i]=sum[i-1]+a[i];
	for(int i=1;i<=n;i++)
	{
		while(tp && sum[stk[tp]]<sum[i]) R[stk[tp]]=i,tp--;
		L[i]=stk[tp];stk[++tp]=i;
	}
	cin>>q;
	for(int i=1;i<=q;i++) scanf("%d%d",&que[i].l,&que[i].r),que[i].id=i;
	fill(ans+1,ans+q+1,Frac(0,1));
	tp=0;
	sort(que+1,que+q+1,cmpr);
	fill(maxn+1,maxn+n+1,Frac(0,1));
	for(int i=0,j=1;i<=n;i++)
	{
		while(tp && sum[stk[tp]]>=sum[i]) tp--;
		for(int j=tp;j && stk[j]>L[i];j--) update(n-stk[j],Frac(sum[i]-sum[stk[j]],i-stk[j]));
		stk[++tp]=i;
		for(;j<=q && que[j].r==i;j++) upd(ans[que[j].id],query(n-que[j].l+1));
	}
	tp=0;
	sort(que+1,que+q+1,cmpl);
	fill(maxn+1,maxn+n+1,Frac(0,1));
	for(int i=n,j=1;i>=0;i--)
	{
		while(tp && sum[stk[tp]]>=sum[i]) tp--;
		for(int j=tp;j && stk[j]<R[i];j--) update(stk[j],Frac(sum[stk[j]]-sum[i],stk[j]-i));
		stk[++tp]=i;
		for(;j<=q && que[j].l==i+1;j++) upd(ans[que[j].id],query(que[j].r));
	}
	for(int i=1;i<=q;i++)
	{
		ll a=(ll)ans[i].a*ans[i].a,b=ans[i].b,g=__gcd(a,b);
		printf("%lld %lld\n",a/g,b/g);
	}
	return 0;
}

Details

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Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 5
Accepted
time: 47ms
memory: 11100kb

input:

2000
-113 314 -664 697 211 -199 -38 -190 8 -661 910 -811 -113 942 77 433 -261 -368 129 -525 968 -608 -21 38 -562 438 -935 -228 220 333 985 -430 916 586 764 476 794 664 383 503 206 -60 380 -130 -988 -904 -996 -304 -286 31 114 119 850 -942 714 -369 -842 250 -192 -462 -727 -427 -602 126 231 718 121 559...

output:

54826875 11
14638276 7
1185921 1
81018001 24
6310144 3
12545764 5
3362000 1
23068809 8
23068809 8
12545764 5
1444908 1
5424241 3
1083603 1
2140369 1
2752281 2
3095072 1
3003289 2
4959529 2
17106496 13
4780232 1
89605156 31
8543929 4
129163225 48
5094049 2
68591524 23
8543929 4
35688676 11
3775249 1
...

result:

ok 200000 numbers

Test #2:

score: -5
Wrong Answer
time: 44ms
memory: 11128kb

input:

2000
717 273 112 -879 -487 -164 -403 -895 391 721 223 895 -34 146 -779 -84 253 44 690 716 975 -625 844 731 204 457 -790 349 -739 610 -536 -561 721 -868 -967 68 729 878 672 -158 -395 -836 383 -634 -371 -262 -443 -123 -20 354 198 171 681 -390 -964 954 735 713 -904 -900 -522 561 -639 -86 326 -479 448 -...

output:

82773604 23
11068929 4
2289169 1
40500496 19
1849372 1
12759184 5
2896804 1
14775048 7
7636232 5
1806005 1
3179089 2
26388769 16
1638050 1
2778889 2
156275001 49
17181522 7
2289169 1
6817321 3
758912 1
40500496 19
4941729 2
8276763 5
5841889 3
3250809 2
1806005 1
2289169 1
156275001 49
9684544 5
252...

result:

wrong answer 3rd numbers differ - expected: '58201641', found: '11068929'

Subtask #2:

score: 15
Accepted

Test #6:

score: 15
Accepted
time: 29ms
memory: 11488kb

input:

100000
754 792 -680 426 425 347 481 -690 530 378 73 -907 -431 45 -530 -552 440 -890 -15 712 695 -679 -310 13 718 805 193 -291 -877 -74 -355 511 -679 -395 166 -710 -657 -19 874 26 832 507 854 -289 700 -404 472 -302 -977 8 -698 40 766 705 369 838 700 -964 552 -535 -75 -608 -181 -503 468 447 772 904 -2...

output:

466344025 67

result:

ok 2 number(s): "466344025 67"

Test #7:

score: 0
Accepted
time: 27ms
memory: 11424kb

input:

100000
-387 -313 -47 -714 -74 239 8 591 541 -633 -660 981 -230 -148 -813 -802 -108 -543 -640 50 962 137 -972 -936 -975 885 793 -541 932 861 -348 885 -280 -977 -677 964 355 604 54 -977 -548 979 -516 136 437 -697 -23 -748 492 897 -538 785 617 -840 675 -978 307 -288 -493 682 678 -623 613 762 -622 -283 ...

output:

2417885584 385

result:

ok 2 number(s): "2417885584 385"

Test #8:

score: 0
Accepted
time: 35ms
memory: 11492kb

input:

100000
-127 303 92 -235 -794 293 -272 199 -175 693 -799 -750 -501 -283 -358 -657 -867 -152 -399 -299 530 -5 285 959 390 -928 617 -478 -889 -133 -492 -855 986 -664 -984 -690 887 -738 39 -570 -268 -767 640 883 711 -748 -75 426 -268 -541 -926 -792 902 214 561 -428 -285 781 -225 -299 -233 134 -896 569 -...

output:

202236841 30

result:

ok 2 number(s): "202236841 30"

Test #9:

score: 0
Accepted
time: 40ms
memory: 11632kb

input:

100000
-340 -696 48 -515 -584 -60 -888 257 214 -889 782 915 905 -964 -536 459 779 -519 -338 -867 622 -902 655 -153 600 -117 269 -887 -242 -985 -267 132 406 98 -368 400 -871 -908 -489 118 -140 -755 -869 -943 965 609 47 -748 194 -160 994 527 871 119 -891 580 -687 865 826 56 -978 -775 -47 792 313 -944 ...

output:

272184004 39

result:

ok 2 number(s): "272184004 39"

Test #10:

score: 0
Accepted
time: 34ms
memory: 11636kb

input:

100000
-736 -691 738 209 -411 -136 792 -110 -441 -753 254 744 -958 -317 312 856 245 995 912 87 -830 131 393 37 -400 934 279 -784 -308 618 -647 967 527 -162 -874 -770 188 -917 -855 772 482 -373 -749 -40 80 -459 710 -354 221 -343 -132 -947 -445 62 -744 851 848 554 -530 -892 -721 -910 -642 -138 -480 -7...

output:

393070276 51

result:

ok 2 number(s): "393070276 51"

Subtask #3:

score: 30
Accepted

Test #11:

score: 30
Accepted
time: 227ms
memory: 17732kb

input:

500000
794 -75 -596 -322 -945 -908 -609 -164 488 626 -877 -710 140 -120 -475 -837 738 669 634 -643 -682 667 816 -785 -608 -836 -860 -932 242 70 -620 268 -121 288 209 -392 732 750 558 -480 565 327 -217 -891 767 211 -690 -66 813 -889 952 615 432 19 411 800 678 718 522 422 940 -510 -544 449 -357 640 40...

output:

1878442281 242

result:

ok 2 number(s): "1878442281 242"

Test #12:

score: 0
Accepted
time: 270ms
memory: 17652kb

input:

500000
145 33 695 -456 761 -556 698 272 121 -445 100 -93 954 485 161 798 -279 921 456 570 151 -880 456 -640 -69 385 -301 -707 -84 -514 -964 597 874 346 841 274 -727 -177 -44 -883 903 -792 -776 926 416 -862 -247 -985 518 674 174 535 -295 960 -952 722 -947 -365 366 -520 -60 -404 800 811 -139 779 735 3...

output:

457831609 56

result:

ok 2 number(s): "457831609 56"

Test #13:

score: 0
Accepted
time: 207ms
memory: 17748kb

input:

500000
762 -391 336 983 -962 920 -428 955 487 -525 281 514 851 -508 607 153 -439 -307 345 557 -615 -997 272 813 -556 -69 -401 -625 143 -142 -499 380 749 613 -190 173 -633 -489 -285 183 -799 645 -863 379 169 -177 993 -184 753 346 58 770 254 705 -467 -700 -337 587 -333 685 -1 -618 -961 327 -33 -722 65...

output:

1160015481 110

result:

ok 2 number(s): "1160015481 110"

Test #14:

score: 0
Accepted
time: 200ms
memory: 17664kb

input:

500000
-819 -236 -303 662 -316 -328 51 821 717 -423 -565 -394 858 -816 -246 -993 831 -999 237 779 52 -642 826 945 307 -675 83 -715 -797 -451 -250 996 53 -765 -869 -717 -126 -250 532 -848 82 -100 542 80 798 701 -648 -433 234 362 462 -770 554 -211 -368 -653 897 -940 416 632 734 -18 727 319 -328 697 11...

output:

188897536 23

result:

ok 2 number(s): "188897536 23"

Test #15:

score: 0
Accepted
time: 265ms
memory: 17620kb

input:

500000
-161 619 -969 31 102 781 561 617 -685 -814 385 -998 911 -206 -404 519 276 -318 -731 -908 901 856 839 333 124 481 29 407 -315 -219 896 956 -286 996 -991 -800 951 109 -846 624 750 -88 955 -752 -814 134 -316 -777 844 391 359 -324 789 -713 -620 849 -553 575 357 792 -735 -828 373 378 -213 -501 -29...

output:

167832025 17

result:

ok 2 number(s): "167832025 17"

Subtask #4:

score: 0
Wrong Answer

Test #16:

score: 0
Wrong Answer
time: 50ms
memory: 11712kb

input:

100000
-496 -233 354 -632 -196 177 -878 -255 -19 -636 685 -70 101 -975 -406 -988 -965 -205 563 -766 763 511 -116 -746 -129 14 106 928 -457 -257 -283 226 3 899 -359 -792 615 490 -57 986 -243 624 -239 931 -555 -821 -72 -611 -380 -397 248 -132 956 -195 -322 -231 319 -214 837 -379 -931 -301 -4 -673 280 ...

output:

1352474176 205
13957947 4
67914081 16
33243858 7
10885778 3
27836176 7
50680161 11
235284921 74
106770889 25
2411809 2
2835045 1
14017536 5
134699236 43
286523329 74
28100601 11
17546888 5
23396569 6
80839443 25
4012009 3
2661336 1
42947912 11
3474284 1
61496964 19
3672245 1
6120676 3
7573504 3
1489...

result:

wrong answer 371st numbers differ - expected: '362217024', found: '3093144'

Subtask #5:

score: 0
Wrong Answer

Test #31:

score: 0
Wrong Answer
time: 238ms
memory: 15020kb

input:

100000
139 -485 -497 -818 254 169 -560 22 377 -67 -243 -75 743 -788 -676 -26 -775 371 576 -303 54 733 422 800 445 687 479 -16 -288 259 783 -586 912 616 439 -416 676 -555 172 659 501 -868 337 22 -60 260 603 -982 -149 466 769 -595 -117 949 -544 904 753 20 776 175 -888 937 -792 -647 -615 59 -298 452 -6...

output:

401594700 47
3916125 1
4343056 1
23049601 8
19713600 7
62900761 15
46076944 15
6620329 2
3775805 1
7868025 4
20659592 7
66569281 16
3354050 1
48818169 10
10629610 3
44129449 10
62837329 19
10975969 2
2958400 1
6786025 2
2683044 1
3323047 1
83631025 17
10329796 3
78198649 18
31136400 13
401594700 47
...

result:

wrong answer 51st numbers differ - expected: '7840000', found: '31136400'