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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#316117 | #8136. Rebellious Edge | ucup-team134# | WA | 48ms | 13484kb | C++17 | 1.6kb | 2024-01-27 17:32:09 | 2024-01-27 17:32:11 |
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];
vector<int> T[N];
int par[N];
bool on[N];
void DFS(int u){
on[u]=true;
for(int v:T[u]){
if(!on[v]){
DFS(v);
}
}
}
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;
int cnt=0;
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;
T[par[i]].pb(i);
ans+=E[i][0].second;
cnt++;
}
}
ll sol=inf;
if(cnt==n-1)sol=ans;
if(y!=1){
ans+=z;
cnt++;
if(par[y]!=0){
ans-=E[y][0].second;
cnt--;
}
bool cyc=false;
for(int u=x;u!=0;u=par[u]){
if(u==y)cyc=true;
}
if(!cyc){
sol=min(sol,ans);
}else{
DFS(y);
for(int u=x;u!=y;u=par[u]){
ll delta=-E[u][0].second;
if(cnt==n){
sol=min(sol,ans+delta);
}else{
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();
T[i].clear();
par[i]=0;
on[i]=false;
}
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 3ms
memory: 13372kb
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: 13484kb
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: 48ms
memory: 13184kb
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:
1613028005 913960568 1284952701 1294564551 199037829 1236121455 983447828 1161647829 1289612543 2444304029 431872921 1272140390 949528400 2328941976 696541797 363553357 999320657 2221495861 879052116 1287531701 912524980 1072419431 1187727045 1571845059 1184110956 1136184594 430092563 1132894799 962...
result:
wrong answer 313th numbers differ - expected: '1326090611', found: '1821468187'