include using namespace std;int n,m,ans=0,k=1,res=0;const int p=10010;int q[p];int main(){ cin>>n>>m; for(int i=1;i<=n;i++) { cin>>q[i]; } while(res!=m) { ans++; for(int i=1;i<=m;i++) { q[i]--; if(q[i]==0) { if(m+k<=n) q[i]=q[m+k++]; else res++; } } } cout<<ans; ret...