Submission #939293

#	Time	Username	Problem	Language	Result	Execution time	Memory
939293		vjudge1	Commuter Pass (JOI18_commuter_pass)	C++17	0 / 100	28 ms	2140 KiB

commuter_pass

#include <bits/stdc++.h>

#pragma optimize("Ofast")
#pragma target("avx2")

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define pf push_front
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define mem(a,i) memset(a,i,sizeof(a))
#define sz(s) (int)s.size()
#define y1 yy
#define ppb pop_back
#define lb lower_bound
#define ub upper_bound
#define gcd(a,b) __gcd(a,b)
#define in insert
#define int ll

const int MAX=300+15;
const int B=2e5;
const int N=104;
const int block=450;
const int maxB=MAX/B+10;
const ll inf=1e18;  
const int mod=1e9+7;
const int mod1=1e9+9;
const ld eps=1e-9;

int dx[8]={1,0,-1,0,1,-1,-1,1};
int dy[8]={0,1,0,-1,1,-1,1,-1};

int binpow(int a,int n){
  if(!n)return 1;
  if(n%2==1)return a*binpow(a,n-1);
  int k=binpow(a,n/2);
  return k*k;
}

int n,m;
int s,t,u,v;
int d[MAX][MAX];

void solve(){
  cin>>n>>m;
  cin>>s>>t>>u>>v;
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
      if(i!=j)d[i][j]=inf;
    }
  }
  for(int i=1;i<=m;i++){
    int x,y,z;
    cin>>x>>y>>z;
    d[x][y]=d[y][x]=z;
  }
  for(int k=1;k<=n;k++){
    for(int i=1;i<=n;i++){
      for(int j=1;j<=n;j++){
        d[i][j]=min(d[i][j],d[i][k]+d[k][j]);
      }
    }
  }
  // cout<<d[u][v]<<"\n";
  int ans=inf;
  for(int x=1;x<=n;x++){
    for(int y=1;y<=n;y++){
      if(d[s][x]+d[x][y]+d[y][t]==d[s][t])ans=min(ans,min(d[v][x]+d[y][u],d[u][x]+d[y][v]));
    }
  }
  cout<<ans;
}

//1010
//0011

signed main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  // prec();
  int t=1;
  // cin>>t;
  while(t--)solve();
}

Compilation message (stderr)

commuter_pass.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize("Ofast")
      | 
commuter_pass.cpp:4: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    4 | #pragma target("avx2")
      |

• Subtask 1: 0 / 16
• Subtask 2: 0 / 15
• Subtask 3: 0 / 24
• Subtask 4: 0 / 45