FWATER - Tưới nước đồng cỏ
Tác giả: hieult
Ngôn ngữ: C++
#include <stdio.h>
//#include <conio.h>
#define maxn 302
#define oo 1000000000
int min(int a,int b)
{
if(a<b)
return a;
else return b;
}
int main()
{
//freopen("FWATER.in","r",stdin);
int n;
int a[maxn][maxn],flag[maxn],d[maxn];
scanf("%d",&n);
n++;a[1][1]=0;d[1]=0;flag[1]=1;
for(int i = 2;i<=n;i++)
{
flag[i]=0;
scanf("%d",&a[1][i]);
a[i][1] = a[1][i];
d[i] = a[1][i];
}
for(int i = 2;i<=n;i++)
for(int j = 2;j<=n;j++)
scanf("%d",&a[i][j]);
int KQ = 0;
while(true)
{
//printf("1");
int fl = 0,minn =oo;
for(int i=1;i<=n;i++)
{
if(flag[i]==0)
{
fl=1;
break;
}
}
if(fl==0)
break;
for(int i = 1;i<=n;i++)
if(flag[i]==0 && d[i]<minn)
{
fl = i;
minn = d[i];
}
KQ = KQ+d[fl];
for(int i = 1;i<=n;i++)
d[i] = min(d[i],a[i][fl]);
flag[fl]=1;
}
printf("%d",KQ);
//getch();
}