fork download
copy 
  1. #include <bits/stdc++.h>
  2. #include <algorithm>
  3. using namespace std;
  4.  
  5. typedef long long  ll;
  6. typedef map <int, int> mii;
  7. typedef pair <int, int> pii;
  8. typedef pair <ll, ll> pll;
  9. const int inf=1e9;
  10.  
  11. #define maxn 1000001
  12. #define mp make_pair
  13. #define pb push_back
  14. #define ff first
  15. #define ss second
  16. #define all(x) x.begin(), x.end()
  17. #include <conio.h>
  18. int n,m,x,y;
  19. int main(){
  20.     scanf("%d %d",&n,&m);
  21.     scanf("%d %d",&x,&y);
  22.     vector < vector <double> >a(n+1, vector <double>(n+1,100));
  23.     vector < vector <double> >b(n+1, vector <double>(n+1,inf));
  24.  
  25.     for(int i=1;i<=n;i++) a[i][i]=0;
  26.  
  27.     while(m--){
  28.         int u,v,p;
  29.         scanf("%d %d %d",&u,&v,&p);
  30.  
  31.         a[u][v]-=p;
  32.         a[v][u]-=p;
  33.         b[u][v]=b[v][u]=p;
  34.     }
  35.  
  36.  
  37.     for(int k=1;k<=n;k++){
  38.         for(int i=1;i<=n;i++){
  39.             for(int j=1;j<=n;j++){
  40.  
  41.                 if( b[i][k]==inf || b[k][j]==inf || a[i][k]==100 || a[k][j]==100) continue;
  42.  
  43.                 if( a[i][j]==100){      
  44.                     a[j][i]=a[i][j] = a[i][k]-( (double)(b[j][k]*a[i][k])/(double)100 );
  45.                 }
  46.                 else{
  47.                     double x1 = a[i][k]-( (double)(b[j][k]*a[i][k])/(double)100);
  48.                     if((double)(100-a[i][j])/(double)100> (double)(100-x1)/(double)100 && x1>=0 && x1<=100){
  49.                         a[j][i]=a[i][j]=x1;
  50.                     }
  51.                 }
  52.             }   
  53.         }
  54.     }
  55.  
  56.  
  57.  
  58.     printf("%.6lf", (100-a[x][y])/100);
  59.  
  60.     return 0;
  61. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp:17:19: fatal error: conio.h: No such file or directory
 #include <conio.h>
                   ^
compilation terminated.
stdout
copy 
Standard output is empty
https://ideone.com/noWtN6
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!