#include <iostream.h>
void main()
{
int i,j,m,n,t,s,l;
int ch[3][5]={
1,1,0,0,0,
1,1,1,0,1,
1,0,0,1,1
};
int w[3];
for (i=0;i<3;i++)
{
m=0;
for (j=0;j<5;j++)
{
if (ch[i][j]==0)
{
++m;
}
}
w[i]=m;
}
for (t=0;t<2;t++)
{
for (n=0;n<3-n;n++)
{
if (w[n]<w[n+1])
{
s=w[n];
w[n]=w[n+1];
w[n+1]=s;
}
}
}
cout<<w[0]<<endl;
}