Submission #535932

#	Time	Username	Problem	Language	Result	Execution time	Memory
535932		inksamurai	Volontiranje (COCI21_volontiranje)	C++17	Compilation error	0 ms	0 KiB

Main

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,x,n) for(int i=x;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3HspL4A ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vec(int);
void print(){cout<<"\n";}
template<class T,class...E>
void print(const T&v,const E&...u){cout<<v<<' ',print(u...);}
// e

pii op(pii l,pii r){
	if(l.fi!=r.fi) return l.se>r.se?l:r;
	return l.fi>r.fi?l:r;
}
pii e(){
	return {0,-1};
}

int op1(int l,int r){
	return max(l,r);
}
int e1(){
	return -1;
}

signed main(){
_3HspL4A;
	int n;
	cin>>n;
	vi a(n);
	rep(i,n) cin>>a[i];
	vi id(n);
	rep(i,n){
		a[i]-=1;
		id[a[i]]=i;
	}
	int len;
	{
		set<int> st;
		for(auto x:a){
			if(!sz(st)){
				st.insert(x);
			}else{
				auto it=st.lower_bound(x);
				if(it!=st.end()){
					st.erase(it);
				}
				st.insert(x);
			}
		}
		len=sz(st);
	}
	atcoder::segtree<pii,op,e> seg(n);
	vi nxt(n);
	rep(i,n){
		int x=a[i];
		pii val=seg.prod(0,x);
		nxt[i]=val.se;
		val.fi++;
		val.se=x;
		seg.set(x,val);
	}
	pii p=seg.prod(0,n);
	assert(p.fi==len);
	vi layer;
	int i=id[p.se];
	while(1){
		layer.pb(i);
		if(nxt[i]==-1) break;
		i=id[nxt[i]];		
	}
	reverse(layer.begin(),layer.end());
	atcoder::segtree<int,op1,e1> nseg(a);
	for(auto v:layer){
		nseg.set(v,-1);
	}
	vec(vi) pns;
	pns.pb(layer);
	vi qol=layer;
	while(1){
		layer={};
		per(j,len){
			if(qol[j]>=n-1) break;
			bool pok=1;
			while(1){
				int val=nseg.prod(qol[j]+1,(j==len-1?n:qol[j+1]));
				if(val==-1){
					pok=0;
					break;
				}
				nseg.set(id[val],-1);
				if(!sz(layer) or a[layer.back()]>val){
					layer.pb(id[val]);
					qol[j]=id[val];
					break;
				}
			}
			if(!pok) break;
		}
		if(sz(layer)!=len) break;
		reverse(layer.begin(),layer.end());
		pns.pb(layer);
	}
	print(sz(pns));
	for(auto ids:pns){
		for(auto v:ids) cout<<v+1<<" ";
		print();
	}
//	
	return 0;
}

Compilation message (stderr)

Main.cpp:2:10: fatal error: atcoder/all: No such file or directory
    2 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.