/*************
the author:
shimutski_zoro
************ */
#include <bits/stdc++.h>
using namespace std;
#define yon(x) cout<<((x)?"YES":"NO");
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define ss second
#define em emplace_back
#define rep(i,j,k) for(int i=j;i<=k;i++)
#define per(i,j,k) for(int i=k;i>=j;i--)
#define forp(x,y,a) for(auto &[x,y]:(a))
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
typedef vector<pll> vpl;
typedef vector<vl> vvl;
typedef vector<vpl> vvpl;
typedef vector<string> vs;
typedef deque<ll> dl;
const int mod=1e9+7;
ll inf =1e18+1;
const int M=1e6;
const int N=1e3+1;
const ll dx[]={1,0,-1,0},dy[]={0,1,0,-1};
void solve(){
ll n,m,d;
cin>>n>>d>>m;
vl a(m);
rep(i,0,m-1)cin>>a[i];
vl idx(m);
iota(all(idx),0LL);
sort(all(idx),[&](ll i ,ll j){return a[i]<a[j];});
sort(all(a));
vvl tmp(n+1);
function<bool(ll)>check=[&](ll r)->bool{
tmp=vvl (n+1);
ll cnt=0;
rep(i,1,n){
rep(j,1,r){
if(a[cnt]>i)
break;
if(a[cnt]+d<i){
return 0;
}else{
tmp[i-1].em(idx[cnt]);
cnt++;
}
if(cnt>=m)return 1;
}
}
return 0;
};
vvl v(n+1);
ll lo=1,hi=m;
ll ans=m;
while(lo<=hi){
ll mid= lo + (hi-lo)/2;
if(check(mid)){
hi=mid-1;
ans=mid;
v=tmp;
}else{
lo=mid+1;
}
}
cout<<ans<<endl;
//vvl v(n+1);
rep(i,1,n){
for(auto it:v[i]){
cout<<it+1<<" ";
}
cout<<0<<"\n";
}
}
signed main()
{
ios_base::sync_with_stdio(NULL);
cin.tie(nullptr);
cout.tie(nullptr);
#ifdef Usaco
string f="herding";
freopen((f+".in").c_str(),"r",stdin);
freopen((f+".out").c_str(),"w",stdout);
#endif
int t = 1;
//cin >> t;
while (t--)
{
solve();
// if(t>0)
//cout<<endl;
}
}
/*
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
34 ms |
5220 KB |
Output is correct |
2 |
Correct |
33 ms |
5284 KB |
Output is correct |
3 |
Correct |
41 ms |
5220 KB |
Output is correct |
4 |
Correct |
33 ms |
5228 KB |
Output is correct |
5 |
Correct |
33 ms |
5156 KB |
Output is correct |
6 |
Correct |
33 ms |
5220 KB |
Output is correct |
7 |
Correct |
33 ms |
5228 KB |
Output is correct |
8 |
Correct |
35 ms |
5300 KB |
Output is correct |
9 |
Correct |
42 ms |
13548 KB |
Output is correct |
10 |
Correct |
44 ms |
14080 KB |
Output is correct |
11 |
Correct |
29 ms |
4680 KB |
Output is correct |
12 |
Correct |
59 ms |
8780 KB |
Output is correct |
13 |
Correct |
85 ms |
14152 KB |
Output is correct |
14 |
Correct |
149 ms |
19140 KB |
Output is correct |
15 |
Correct |
143 ms |
21320 KB |
Output is correct |
16 |
Correct |
207 ms |
26092 KB |
Output is correct |
17 |
Runtime error |
269 ms |
33744 KB |
Memory limit exceeded |
18 |
Runtime error |
226 ms |
34912 KB |
Memory limit exceeded |
19 |
Runtime error |
293 ms |
44852 KB |
Memory limit exceeded |
20 |
Runtime error |
245 ms |
33744 KB |
Memory limit exceeded |