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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#214513#2709. Maximum WeightWhite_Wat1002520ms3596kbC++11972b2024-11-19 19:36:562024-11-19 23:00:40

answer

#include<bits/stdc++.h>

using namespace std;

const int N = 1e5+5;

typedef long long ll;
int T;
int n,m;
struct G{int u,v,w;}g[N];
int f[N],siz[N];
int find(int x){return f[x]==x?x:f[x]=find(f[x]);}
int _,h[N];
//struct E{int to,nex,w;}e[N<<1];
//void add(int u,int v,int w){e[++_].nex=h[u],h[u]=_,e[_].to=v,e[_].w=w;}
ll ans;
void init(){
	for(int i=1;i<=n;i++) f[i]=i,h[i]=0,siz[i]=1;
	_=0,ans=0;
}
void Kruskal(){
	sort(g+1,g+1+m,[&](const G &x,const G &y){return x.w<y.w;});
	for(int i=1;i<=m;i++){
		int u=g[i].u,v=g[i].v,w=g[i].w;
		int fu=find(u),fv=find(v);
		if(fu==fv) continue;
		ans=ans+1ll*w*siz[fu]*siz[fv];
		f[fu]=fv;
		siz[fv]+=siz[fu];
//		add(u,v,w),add(v,u,w);
	}
}

int main(){
	ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	
	cin>>T;
	while(T--){
		cin>>n>>m;
		init();
		for(int i=1;i<=m;i++){
			int u,v,w;cin>>u>>v>>w;
			g[i]={u,v,w};
		}
		Kruskal();
		cout<<ans<<'\n';
	}
	
	return 0;
}

Details

小提示:点击横条可展开更详细的信息

Test #1:

score: 5
Accepted
time: 0ms
memory: 1288kb

input:

5
200 200
87 21 609
97 9 566
169 28 893
181 137 280
139 67 622
78 186 503
104 59 24
58 7 460
2 5 972...

output:

16352732
16336938
18311542
17074338
17304585

result:

ok 5 lines

Test #2:

score: 5
Accepted
time: 0ms
memory: 1284kb

input:

5
200 200
138 19 453
178 159 227
89 99 937
38 60 806
145 45 448
169 146 982
180 153 382
73 167 608
1...

output:

17101828
17550376
16746021
17786837
16222316

result:

ok 5 lines

Test #3:

score: 5
Accepted
time: 0ms
memory: 1284kb

input:

5
200 200
140 37 428
167 191 722
18 70 854
12 63 869
40 107 253
146 21 701
198 126 594
55 183 67
2 4...

output:

16466132
16907763
17447896
17281330
17606236

result:

ok 5 lines

Test #4:

score: 5
Accepted
time: 0ms
memory: 1284kb

input:

5
200 200
187 173 189
59 103 160
12 143 13
16 115 179
130 108 854
7 39 124
164 72 407
66 200 625
105...

output:

16551712
17073788
18382571
16125810
17394218

result:

ok 5 lines

Test #5:

score: 5
Accepted
time: 0ms
memory: 1284kb

input:

5
200 200
29 8 307
152 26 149
114 137 559
9 146 81
179 5 203
3 150 8
26 81 660
82 69 356
60 51 591
1...

output:

17720164
16949531
17616778
17620129
16288612

result:

ok 5 lines

Test #6:

score: 5
Accepted
time: 0ms
memory: 1288kb

input:

5
200 200
35 144 182
145 194 241
163 140 918
102 193 228
167 130 338
40 65 646
22 1 238
131 120 122
...

output:

17829792
17475817
17019069
17199330
17653988

result:

ok 5 lines

Test #7:

score: 5
Accepted
time: 266ms
memory: 3444kb

input:

5
53735 100000
39892 35843 390
26908 36823 655
6371 23805 896
22798 20233 34
26039 37466 620
22807 2...

output:

732544305334
2754865428244
382579317384
1280102815136
1229031627679

result:

ok 5 lines

Test #8:

score: 5
Accepted
time: 157ms
memory: 3324kb

input:

5
10229 100000
7299 6840 113
6306 8765 160
5192 8138 791
6357 5200 186
9344 6620 230
2728 5157 294
1...

output:

5404797207
20352728657
353943098727
1937353835830
21748452142

result:

ok 5 lines

Test #9:

score: 5
Accepted
time: 154ms
memory: 3508kb

input:

5
57846 100000
40438 9781 106
35677 46516 444
39104 10920 598
14172 5965 925
10993 42212 964
34922 5...

output:

904138784672
1229908083183
3312833162570
13466143626
117116026446

result:

ok 5 lines

Test #10:

score: 5
Accepted
time: 142ms
memory: 3420kb

input:

5
83866 100000
54676 45243 758
42970 31099 721
27422 62458 4
64200 18592 974
7505 20672 900
83354 49...

output:

2595447490609
123598549967
873449242705
163261591501
6530129535

result:

ok 5 lines

Test #11:

score: 5
Accepted
time: 141ms
memory: 3352kb

input:

5
10818 100000
6480 6451 261
10486 2548 495
8142 9400 330
4568 1781 682
8289 5945 660
1058 5902 378
...

output:

6395040382
453510144589
1146821490214
1989455054879
2131608702734

result:

ok 5 lines

Test #12:

score: 5
Accepted
time: 142ms
memory: 3524kb

input:

5
28267 100000
6205 10002 70
12719 28165 6
6174 15544 940
3052 1398 62
648 16984 103
17068 3616 397
...

output:

112235086092
704232646899
3480141264037
5409166707
847127748242

result:

ok 5 lines

Test #13:

score: 5
Accepted
time: 157ms
memory: 3464kb

input:

5
33283 100000
134 21400 430
22159 6741 87
2473 18253 422
13630 28077 144
22002 24779 437
13034 2417...

output:

181764918984
10494375881
2904692922887
2873734401778
1952601398766

result:

ok 5 lines

Test #14:

score: 5
Accepted
time: 133ms
memory: 3548kb

input:

5
95017 100000
37418 35411 167
6415 94231 616
3744 60077 591
73070 5537 37
50016 18446 825
55281 519...

output:

3761434512069
493802436522
3118031756937
254959337484
400341250283

result:

ok 5 lines

Test #15:

score: 5
Accepted
time: 184ms
memory: 3164kb

input:

5
35374 100000
7390 8869 566
34086 23636 990
32887 4674 494
6452 18007 424
12723 34687 25
11020 3193...

output:

217535971486
821519157137
1089950355527
203558732186
222284648865

result:

ok 5 lines

Test #16:

score: 5
Accepted
time: 255ms
memory: 3596kb

input:

5
99901 100000
35090 96613 813
67573 26667 941
3022 45474 629
10290 52654 196
12701 59286 893
80077 ...

output:

4639212192506
4527502650380
2646373298968
861236891829
1047783342082

result:

ok 5 lines

Test #17:

score: 5
Accepted
time: 248ms
memory: 3304kb

input:

5
60029 100000
51021 51437 658
17839 25439 501
51521 1893 516
20462 309 128
58519 8607 623
34157 498...

output:

1003441431151
1691484443966
1791163494281
18745776112
210354312422

result:

ok 5 lines

Test #18:

score: 5
Accepted
time: 228ms
memory: 3596kb

input:

5
25779 100000
2274 4201 54
11775 9137 148
697 21064 449
14126 25608 840
5579 19585 779
9641 15433 5...

output:

85132266903
182947677225
1097763476065
2659255065879
4423639006491

result:

ok 5 lines

Test #19:

score: 5
Accepted
time: 164ms
memory: 3552kb

input:

5
33220 100000
31269 1383 683
18955 25297 299
700 12197 974
27221 20329 796
29285 29654 414
21164 21...

output:

179906133251
3317919286134
3795092286748
3405456936976
1387185986674

result:

ok 5 lines

Test #20:

score: 5
Accepted
time: 149ms
memory: 3108kb

input:

5
17719 100000
11733 10279 4
15938 11631 578
9235 13763 91
13846 2450 912
12426 13022 236
13098 1628...

output:

27833343898
888210439717
13546738134
16496672955
438926144015

result:

ok 5 lines