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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#746709#8136. Rebellious Edgeucup-team4074WA 39ms22984kbC++171.7kb2024-11-14 15:20:002024-11-14 15:20:01

Judging History

This is the latest submission verdict.

  • [2024-11-14 15:20:01]
  • Judged
  • Verdict: WA
  • Time: 39ms
  • Memory: 22984kb
  • [2024-11-14 15:20:00]
  • Submitted

answer

#include<bits/stdc++.h>
#define int long long
#define fast ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
using namespace std;

void solve();
int tt=0,flag=0;

int ti=0;
signed main() {
    fast
    int t = 1;
    cin >> t;
    ti=t;
    while (t--) solve();
}

const int maxn=500010;
int n,m,inf=1e18,id=0;
struct A{int x,y,z;
};
A e[maxn];
int v[maxn];
bool v2[maxn];
int d[maxn];
int f[maxn];
vector<int>w[maxn];
int root=0;
void add(int x,int y,int z)
{
	e[++id]={x,y,z};
}
void dfs(int x)
{
	for(int i=0;i<w[x].size();i++)
	{
		if(v[w[x][i]])continue;
		v[w[x][i]]=v[x];
		dfs(w[x][i]);
	}
}
void ch2(int x)
{
	if(!v2[f[x]])
	{
		v2[f[x]]=1;
		ch2(f[x]);
	}
}
int ch()
{
    int ans=0;
	for(int i=1;i<=n;i++)
	{
		d[i]=inf;
		f[i]=0;
		v[i]=0;
		v2[i]=0;
		w[i].clear();
	}
	d[1]=0;
	for(int i=1;i<=m;i++)
	{
		if(e[i].y==1)continue;
		if(e[i].z<d[e[i].y])
		{
			f[e[i].y]=e[i].x;
			d[e[i].y]=e[i].z;
		}
	}
	int s=0;
	for(int i=1;i<=n;i++)
	{
		if(f[i]==0)continue;
		w[f[i]].push_back(i);
		ans+=d[i];
	}
	for(int i=1;i<=n;i++)
	{
		if(!v[i])
		{
			s++;
			v[i]=s;
			dfs(i);
		}
	}
	if(s==1)return ans;
	ch2(root);
	s=inf;
	for(int i=1;i<=m;i++)
	{
		if(v2[e[i].y]&&v[e[i].x]!=v[e[i].y])
		{
			s=min(s,e[i].z-d[e[i].y]);
		}
	}

	return ans+s;
	
}
void solve() 
{
    id=0;
    tt++;
    root=0;
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
    	int x,y,z;
    	cin>>x>>y>>z;
    	if(flag&&tt==313)cout<<x<<"!!!"<<y<<"!!"<<z<<"\n";
    	if(ti==50000&&tt==1&&x==1&&y==3)flag=1;
    	if(y<x)root=y;
    	add(x,y,z);
	}
	if(!flag)cout<<ch()<<"\n";
}
/*
1
4 5
2 3 39917807
1 2 830477742
3 4 670700294
1 4 894960672
3 2 142909800
*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 22128kb

input:

3
5 6
1 2 4
1 3 2
2 3 0
3 4 1
4 5 1
5 2 1
4 4
1 2 4
1 3 6
1 4 8
4 2 1000000
3 3
1 2 100
2 1 10
2 3 1000

output:

5
18
1100

result:

ok 3 number(s): "5 18 1100"

Test #2:

score: 0
Accepted
time: 39ms
memory: 22984kb

input:

50000
4 5
2 4 998973548
2 3 501271695
4 1 778395982
1 4 32454891
1 2 757288934
4 5
1 4 720856669
2 3 665098951
3 4 407461517
2 1 866914401
1 2 457859826
4 5
1 2 75288664
1 4 624893594
3 2 458973866
2 4 769074655
2 3 834773751
4 5
2 3 237060634
2 4 297307882
3 4 200383586
1 2 42856502
3 1 16574713
4 ...

output:

1291015520
1530420294
1534956009
480300722
1366795927
1541095843
2493849488
858095911
1034153425
793861088
605832428
1051598350
612891589
1265994009
517769091
1678219738
1556463491
93634961
960978736
984886788
1696503797
1002892611
1969660290
1431417780
1515267731
977157479
1937478556
654475526
1401...

result:

ok 50000 numbers

Test #3:

score: -100
Wrong Answer
time: 39ms
memory: 17500kb

input:

50000
4 6
1 3 754771977
2 3 517886121
1 4 392356144
1 2 702785740
3 4 888230940
2 1 829304957
4 6
2 4 255940037
1 2 380616616
1 4 819140865
3 4 36965607
1 3 496378345
4 3 652252309
4 6
2 4 179216787
4 2 401136502
1 2 715271531
1 3 859345710
3 4 24470489
1 4 148650889
4 6
3 2 20348069
1 2 152861663
1...

output:

3!!!4!!891141336
1!!!2!!905141171
1!!!3!!351769495
2!!!4!!683786090
2!!!3!!232540926
4!!!2!!83179780

result:

wrong output format Expected integer, but "3!!!4!!891141336" found