C++ :

#include<stdio.h>
#define inf 0x3f3f3f
int num[1007];
int main()
{
    //freopen("in.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    int n,t;
    scanf("%d\n",&t);
    while(t--)
    {
        scanf("%d",&n);
        for(int i=1;i<=n;i++)
            scanf("%d",&num[i]);
        int a,count,maxx=inf;
        for(int i=1;i<=n;i++)
        {
            count=0;
            for(int j=1;j<=num[i];j++)
            {
                scanf("%d",&a);
                count+=a;
            }
            count=count*5+num[i]*15;
            if(count<maxx)maxx=count;
        }
        printf("%d\n",maxx);
    }
    return 0;
}