제출 #964269

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
964269		pcc	Baloni (COCI15_baloni)	C++17	100 / 100	262 ms	7548 KiB

baloni

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

const ll mxn = 1e6+10;
int N;
map<int,int> mp;
int arr[mxn];

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N;
	for(int i = 1;i<=N;i++)cin>>arr[i];
	for(int i = 1;i<=N;i++){
		if(mp.find(arr[i]) != mp.end()){
			mp[arr[i]]--;
			if(!mp[arr[i]])mp.erase(arr[i]);
		}
		mp[arr[i]-1]++;
	}
	ll ans = 0;
	for(auto &i:mp)ans += i.sc;
	cout<<ans<<'\n';
}

• Subtask 1: 100 / 100