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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#316028 | #8136. Rebellious Edge | ucup-team134# | WA | 43ms | 9240kb | C++17 | 1.3kb | 2024-01-27 17:04:41 | 2024-01-27 17:04:41 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int N=200050;
vector<pair<int,int>> E[N];
int par[N];
bool on[N];
const ll inf=1e18;
int main(){
int t;
scanf("%i",&t);
while(t--){
int n,m;
scanf("%i %i",&n,&m);
int x,y,z;
for(int i=1;i<=m;i++){
int u,v,w;
scanf("%i %i %i",&u,&v,&w);
if(u>v){
x=u;
y=v;
z=w;
}else{
E[v].pb({u,w});
}
}
ll ans=0;
bool ok=true;
for(int i=2;i<=n;i++){
sort(E[i].begin(),E[i].end(),[](pair<int,int> a,pair<int,int> b){return a.second<b.second;});
if(E[i].size()){
par[i]=E[i][0].first;
ans+=E[i][0].second;
}else{
ok=false;
}
}
ll sol=inf;
if(ok)sol=ans;
ans+=z;
if(par[y]!=0){
ans-=E[y][0].second;
}
bool cyc=false;
for(int u=x;u!=0;u=par[u]){
if(u==y)cyc=true;
}
if(!cyc){
sol=min(sol,ans);
}else{
for(int u=x;u!=y;u=par[u]){
on[u]=true;
}
on[y]=true;
for(int u=x;u!=y;u=par[u]){
ll delta=-E[u][0].second;
ll mn=inf;
for(int i=0;i<E[u].size();i++){
if(!on[E[u][i].first]){
mn=min(mn,(ll)E[u][i].second);
}
}
sol=min(sol,ans+delta+mn);
}
}
printf("%lld\n",sol);
for(int i=1;i<=n;i++){
E[i].clear();
par[i]=0;
on[i]=false;
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 8664kb
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: -100
Wrong Answer
time: 43ms
memory: 9240kb
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:
wrong answer 301st numbers differ - expected: '1442045931', found: '1328599284'