#include<iostream>
using namespace std;
int n,k,w;
long long lis[1000010];
long long sum;
int ans;
int main(){
freopen("transit.in","r",stdin);
freopen("transit.out","w",stdout);
scanf("%d%d%d",&n,&k,&w);
for(int i=1;i<=n;i++){
long long p;scanf("%lld",&p);
lis[i%k]+=p;
sum+=p;
}
ans=w/sum*k;
w=w%sum;
for(int i=1;i<=k;i++){
if(w<=0) break;
w-=lis[i