differential 2017-07-18 02:44:01
点我顶贴
收藏
删除
#include<cstdio>
int a[101][101],b[101];
bool v[101];
int ans,n;
int main()
{
scanf("%d",&n);
for (int i=1;i<=n;i++)
for (int j=1;j<=n;j++)
{
scanf("%d",&a[i][j]);
if (a[i][j]==0) a[i][j]=0x7f7f7f7f7f;
}
for (int i=1;i<=n;i++) b[i]=a[1][i];
v[1]=1;
while (1)
{
int k=0,min=0x7f7f7f7f7f;
for (int i=1;i<=n;++i)
if (b[i]<min&&!v[i])
{
min=b[i];
k=i;
}
if (k==0) break;
v[k]=1;
ans+=b[k];
for (int i=1;i<=n;i++)
if (!v[i]&&a[k][i]<b[i])
b[i]=a[k][i];
}
printf("%d",ans);
return 0;
}