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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
#18283#2178. Robot2022zll#0 23ms34436kbC++111.6kb2022-01-17 12:01:252022-05-04 17:39:57

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.
  • [2022-05-04 17:39:57]
  • 评测
  • 测评结果:0
  • 用时:23ms
  • 内存:34436kb
  • [2022-01-17 12:01:25]
  • 提交

answer

#include<cstdio>
#include<cstring>
#include<map>
#include<queue>
typedef long long ll;
int read(){
	int ch=getchar(),num=0;
	while(ch<48||ch>57)ch=getchar();
	while(ch>=48&&ch<=57)num=(num<<3)+(num<<1)+(ch^48),ch=getchar();
	return num;
}
ll min(ll a,ll b){
	return a<b?a:b;
}
const int maxn=100005,maxm=200005;
int n,m,k,u,v,c,w;
ll S[maxn+maxm*2],dis[maxn+maxm*2];
int head[maxn+maxm*2],total;
struct Edge{
	int to,next,c,w;
}e[maxm*6];
std::map<int,int>virt[maxn+maxm*2];
void add(int u,int v,int c,int w){
	if(!virt[u].count(c)){
		virt[u][c]=++k;
		e[++total]={k,head[u],0,0};
		head[u]=total;
	}
	int t=virt[u][c];
	e[++total]={v,head[t],c,w};
	head[t]=total;
	S[t]+=w;
}
struct Node{
	int u;
	ll d;
};
bool operator<(Node a,Node b){
	return a.d!=b.d?a.d<b.d:a.u<b.u;
}
std::priority_queue<Node>q;
void update(int u,ll d){
	if(dis[u]>d){
		dis[u]=d;
		q.push(Node{u,d});
	}
}
void dijkstra(){
	q.push(Node{1,dis[1]=0});
	while(!q.empty()){
		int u=q.top().u;
		ll d=q.top().d;
		q.pop();
		if(dis[u]<d)continue;
		if(u<=n){
			for(int i=head[u];i;i=e[i].next){
				int v=e[i].to;
				for(int j=head[v];j;j=e[j].next){
					update(e[j].to,d+min((ll)e[j].w,S[v]-e[j].w));
					update(virt[e[j].to][e[j].c],d);
				}
			}
		}else
			for(int i=head[u];i;i=e[i].next){
				int v=e[i].to;
				update(v,d+S[u]-e[i].w);
			}
	}
}
int main(){
	n=k=read(),m=read();
	for(int i=1;i<=m;i++){
		u=read(),v=read(),c=read(),w=read();
		add(u,v,c,w),add(v,u,c,w);
	}
	memset(dis,63,sizeof(dis));
	dijkstra();
	printf("%lld\n",dis[n]<0x3f3f3f3f3f3f3f3f?dis[n]:-1);
	return 0;
}

详细

Subtask #1:

score: 0
Time Limit Exceeded

Test #1:

score: 34
Accepted
time: 4ms
memory: 34420kb

input:

2 1
1 2 1 10

output:

0

result:

ok single line: '0'

Test #2:

score: 0
Accepted
time: 2ms
memory: 33240kb

input:

8 1
5 6 1 7

output:

-1

result:

ok single line: '-1'

Test #3:

score: 0
Accepted
time: 1ms
memory: 34092kb

input:

8 19
4 8 15 5
7 8 15 6
1 4 15 6
3 4 2 10
2 7 15 10
5 6 2 10
1 7 2 3
4 5 15 7
1 6 15 6
2 5 2 6
1 8 15 2
1 2 15 9
5 7 2 5
3 8 2 5
4 7 2 6
6 7 15 8
3 7 15 6
2 8 2 1
5 8 15 6

output:

2

result:

ok single line: '2'

Test #4:

score: 0
Accepted
time: 2ms
memory: 34240kb

input:

4 6
1 2 1 7
3 4 1 10
2 3 2 5
2 4 1 4
1 4 6 2
1 3 1 2

output:

0

result:

ok single line: '0'

Test #5:

score: 0
Accepted
time: 7ms
memory: 33796kb

input:

64 106
7 46 100 641441921
4 22 92 909042053
27 46 100 185644091
52 54 100 333473988
21 41 69 747879553
23 45 24 121784836
16 23 69 538978180
15 42 92 403583091
49 60 69 112127397
44 48 21 733685727
18 40 92 287239281
3 30 48 498139743
21 25 24 281665265
13 24 69 315527284
12 35 21 100990101
33 56 10...

output:

-1

result:

ok single line: '-1'

Test #6:

score: 0
Accepted
time: 8ms
memory: 34368kb

input:

10 45
6 7 29 19322896
6 8 29 826842878
5 9 29 229755065
1 6 29 49301462
4 10 29 356862039
3 7 29 377906409
8 10 29 877820670
4 8 29 150486169
1 10 29 291057766
1 5 29 982043864
1 3 29 126557279
5 6 29 721959799
3 10 29 636909401
1 7 29 772752473
5 8 29 523364181
7 9 29 250673970
2 6 29 417264209
2 4...

output:

255671682

result:

ok single line: '255671682'

Test #7:

score: 0
Accepted
time: 23ms
memory: 33832kb

input:

71 788
5 24 146 614916874
56 61 567 467226384
16 44 275 490241032
14 25 567 779488700
19 42 262 524833651
6 19 567 912315689
8 21 774 326632848
46 62 675 296672130
27 32 715 104878301
13 47 675 546642528
18 68 675 349712771
8 43 146 305351688
13 58 567 776051722
49 63 601 454628166
30 43 715 7695855...

output:

46083838

result:

ok single line: '46083838'

Test #8:

score: 0
Accepted
time: 4ms
memory: 32732kb

input:

55 443
11 21 307 732223755
32 42 307 182136903
47 48 346 925071240
45 53 307 225221704
1 45 307 807617287
28 46 307 644657251
2 42 346 807672874
39 42 346 173126332
11 50 346 105073586
48 53 346 363756204
19 27 346 749462761
8 20 346 838034581
28 31 307 183749842
28 53 346 909041858
33 50 346 364806...

output:

342534314

result:

ok single line: '342534314'

Test #9:

score: 0
Accepted
time: 4ms
memory: 34400kb

input:

999 1988
153 528 1690 1
1 867 1158 1
481 785 1741 1
226 528 203 1
356 481 1957 1
278 481 716 1
168 528 612 1
1 140 489 1
528 533 446 1
4 528 1715 1
481 698 1350 1
35 528 1658 1
528 601 1345 1
24 481 559 1
524 528 88 1
1 606 1547 1
481 493 1017 1
165 528 1685 1
481 849 1847 1
528 711 1464 1
1 663 222...

output:

3

result:

ok single line: '3'

Test #10:

score: 0
Accepted
time: 8ms
memory: 34028kb

input:

999 1988
328 983 1573 1
130 468 1140 1
44 983 210 1
15 983 1848 1
517 983 1451 1
1 131 563 1
1 209 182 1
130 793 1295 1
130 947 1295 1
130 680 1295 1
130 214 1295 1
584 983 567 1
726 983 1019 1
130 456 1295 1
198 575 1295 1
1 6 283 1
200 575 1295 1
205 575 1295 1
1 399 1128 1
130 589 1510 1
923 983 ...

output:

3

result:

ok single line: '3'

Test #11:

score: 0
Accepted
time: 3ms
memory: 33612kb

input:

1000 1990
528 730 1843 1
523 730 1843 1
124 894 1843 1
224 730 1843 1
124 617 1843 1
679 730 1843 1
124 913 1843 1
488 730 1843 1
493 730 1843 1
730 748 1843 1
730 959 1843 1
124 437 1843 1
124 187 1843 1
124 332 1843 1
124 279 1843 1
124 961 1843 1
124 744 1843 1
203 730 1843 1
723 730 1843 1
730 9...

output:

3

result:

ok single line: '3'

Test #12:

score: 0
Accepted
time: 4ms
memory: 33156kb

input:

998 1658
296 805 151 1
141 805 151 1
218 983 151 2
1 608 151 2
1 49 151 2
740 805 151 1
225 805 151 1
218 420 151 2
87 266 151 1
218 527 151 2
1 374 151 2
218 905 151 2
699 744 151 1
660 805 151 1
836 889 151 1
62 805 151 1
184 218 151 2
95 457 151 1
218 985 151 2
218 621 151 2
1 577 151 2
587 981 1...

output:

666

result:

ok single line: '666'

Test #13:

score: 0
Accepted
time: 4ms
memory: 34436kb

input:

1000 1983
752 787 507 1
752 832 507 1
752 927 507 1
556 581 507 1
581 891 507 1
451 581 507 1
107 581 507 1
752 765 507 1
81 752 507 2
251 581 507 1
581 859 507 1
321 581 507 1
55 581 507 1
752 814 507 1
581 780 507 1
581 790 507 1
387 581 507 1
356 752 507 1
581 932 507 1
1 889 507 2
581 893 507 1
...

output:

989

result:

ok single line: '989'

Test #14:

score: 0
Accepted
time: 9ms
memory: 32708kb

input:

1000 1983
415 567 756 1
62 709 756 1
89 709 756 1
417 709 756 1
457 709 756 1
149 415 756 1
709 964 756 1
275 709 756 1
709 928 756 1
299 709 756 1
487 709 756 1
709 791 756 1
415 967 756 1
415 941 756 1
217 709 756 1
709 984 756 1
415 604 756 1
212 415 756 1
399 415 756 1
438 709 756 1
294 709 756 ...

output:

26

result:

ok single line: '26'

Test #15:

score: -34
Time Limit Exceeded

input:

1000 999
656 793 229 300116971
200 526 229 848062849
57 209 229 748009426
608 970 229 962221417
161 721 229 384089949
260 595 229 428874737
156 233 229 577150696
158 385 229 738154446
136 709 229 67894231
25 903 229 397142287
732 767 229 957266971
550 781 229 823510106
384 752 229 406598247
5 271 22...

output:


result:


Subtask #2:

score: 0
Time Limit Exceeded

Test #21:

score: 0
Time Limit Exceeded

input:

25437 78923
921 9998 30945 1
5452 13736 24464 1
11746 24238 24464 1
10875 12958 24464 1
12267 20617 30945 1
3738 16549 35589 1
16223 16940 35589 1
1303 23059 24464 1
12424 21853 24464 1
11198 20674 35589 1
15645 19099 30945 1
8860 9441 24464 1
3609 15160 35589 1
22638 23472 24464 1
766 8991 35589 1
...

output:


result:


Subtask #3:

score: 0
Skipped

Dependency #1:

0%