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Re:sorry,搞错个变量,变成WA了,自己解决。。。In Reply To:RERERERE到死啊,开到2800的数组了。。。 Posted by:HeartRush at 2007-09-12 13:27:05 > #include<stdio.h>
> #include<string.h>
> #define maxn 2800
> #define maxL 50
> int n,m,k;
> char recept[maxn][maxL],lr;
> char need[maxn][maxL];
> int g[maxn][maxn];
> int check[maxn],cov[maxn];
> int fromto[maxn][maxn];
> int i1,i2;
> char s1[maxL],s2[maxL];
>
> void add()
> {
> int i;
> for(i=1;i<=lr;i++)
> if(strcmp(recept[i],s1)==0)
> break;
> if(i>lr)
> {
> lr++;
> strcpy(recept[lr],s1);
> i1=lr;
> }
> else
> i1=i;
>
> for(i=1;i<=lr;i++)
> if(strcmp(recept[i],s2)==0)
> break;
> if(i>lr)
> {
> lr++;
> strcpy(recept[lr],s2);
> i2=lr;
> }
> else
> i2=i;
> }
> int dfs(int a)
> {
> for(int i=1;i<=n;i++)
> {
> if(g[a][i]==1 && !check[i])
> {
> check[i]=1;
> if(cov[i]==0||dfs(cov[i]))
> {
> cov[i]=a;
> return 1;
> }
> }
> }
> return 0;
> }
> int max_match()
> {
> int i;
> int ans=0;
> for(i=1;i<=n;i++){
> memset(check,0,sizeof(check));
> if(dfs(i))
> ans++;
> }
> return ans;
> }
> int main()
> {
> //freopen("f.in","r",stdin);
> int i,j,t;
>
> memset(g,0,sizeof(g));
> memset(cov,0,sizeof(cov));
> memset(fromto,0,sizeof(fromto));
>
> scanf("%d",&n);
> for(i=1;i<=n;i++)
> scanf("%s",recept[i]);
> lr=n;
> scanf("%d",&m);
> for(i=1;i<=m;i++)
> scanf("%s %s",s1,need[i]);
> scanf("%d",&k);
> for(i=0;i<k;i++){
> scanf("%s %s",s2,s1);
> i1=i2=1;
> add();
> fromto[i1][i2]=1;
> }
> for(i=1;i<=lr;i++)
> fromto[i][i]=1;
> for(t=1;t<=lr;t++)
> for(i=1;i<=lr;i++)
> for(j=1;j<=lr;j++)
> fromto[i][j]=fromto[i][j]||fromto[i][t]&&fromto[t][j];
> for(i=1;i<=n;i++)
> for(j=1;j<=lr;j++)
> if(fromto[i][j])
> for(t=1;t<=m;t++)
> if(strcmp(recept[j],need[t])==0)
> g[i][t]=1;
> printf("%d\n",m-max_match());
>
> return 0;
> }
>
>
>
>
>
>
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