"km algorithm" hdu2255-Ben-off make money

KM algorithm of nudity. O (n^4) template , in fact, in the augmented path is still redundant, you can use BFS optimization to O (n^3).

1#include <iostream>2#include <cstdio>3#include <cmath>4#include <cstring>5#include <cstdlib>6#include <algorithm>7 using namespacestd;8 Const intmaxn= -+5;9 Const intinf=0x7fffffff;Ten intn,m; One intW[MAXN][MAXN]; A intX[MAXN],Y[MAXN]; - intVISX[MAXN],VISY[MAXN],SLACK[MAXN]; - intLK[MAXN]; the  - intDfsintu) - { -visx[u]=1; +      for(intI=1; i<=n;i++) -     { +         intwt=x[u]+y[i]-W[u][i]; A         if(!visy[i] && wt==0) at         { -visy[i]=1; -             if(lk[i]==-1||DFS (Lk[i])) -             { -lk[i]=u; -                 return 1; in             } -         } to         Else if(SLACK[I]&GT;WT) slack[i]=wt; +     } -     return 0; the } *  $ intKM ()Panax Notoginseng { -memset (lk,-1,sizeof(LK)); the      for(intI=1; i<=n;i++) +     { Ay[i]=0; thex[i]=-INF; +          for(intj=1; j<=n;j++) x[i]=Max (x[i],w[i][j]); -     } $      for(intI=1; i<=n;i++) $     { -memset (VISX,0,sizeof(VISX)); -memset (Visy,0,sizeof(Visy)); thememset (Slack,127,sizeof(slack));  -          while(!DFS (i))Wuyi         { the             intDelta=INF; -              for(intj=1; j<=n;j++) Wu                 if(!visy[j] && Slack[j]<delta) delta=Slack[j]; -              for(intj=1; j<=n;j++)  About             { $                 if(Visx[j]) -                 { -x[j]-=Delta; -visx[j]=0; A                 } +                 if(Visy[j]) the                 { -y[j]+=Delta; $visy[j]=0; the                 } the             } the         }  the     } -     intret=0; in      for(intI=1; i<=n;i++) ret+=x[i]+Y[i]; the     returnret; the } About  the voidInit () the { theMemset (W,0,sizeof(w)); +      for(intI=1; i<=n;i++) -     { the          for(intj=1; j<=n;j++) Bayiscanf"%d",&w[i][j]); the     } the } -  - intMain () the { the      while(~SCANF ("%d",&N)) the     { the init (); -printf"%d\n", KM ()); the     } the     return 0; the}

"km algorithm" hdu2255-Ben-off make money