Submission #602169

#	Time	Username	Problem	Language	Result	Execution time	Memory
602169		inksamurai	Baloni (COCI15_baloni)	C++17	0 / 100	510 ms	131072 KiB

baloni

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=(c);i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3aFGabX ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

const int _n=1000011; // fix me
set<int> rbts[_n];

signed main(){
_3aFGabX;
	int n;
	cin>>n;
	vi a(n);
	rep(i,n){
		cin>>a[i];
		rbts[a[i]].insert(i);
	}
	// print(sz(rbts[1]));
	int res=0;
	for(int i=_n;i>=1;i--){
		int v=i,j=-1;
		while(sz(rbts[i])){
			res+=1;
			while(v and sz(rbts[v])){
				auto it=rbts[v].lower_bound(j);
				if(it!=rbts[v].end()){
					j=*it;
					rbts[v].erase(it);
				}else{
					break;
				}
				v-=1;
			}
		}
	}
	print(res);
}

• Subtask 1: 0 / 100